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Finding the Fourth Proportional to 8,726.79, 12,043.17 and 4,950.21

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Solution

The fourth proportional to 8,726.79, 12,043.17 and 4,950.21 is: 6,831.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,726.79 : 12,043.17 = 4,950.21 : x
  2. Step 2: Convert to fraction form
    8,726.79/12,043.17 = 4,950.21/x
  3. Step 3: Cross multiply
    8,726.79x = 12,043.17 × 4,950.21
  4. Step 4: Simplify right side
    8,726.79x = 59,616,160.35
  5. Step 5: Solve for x
    x = 59,616,160.35/8,726.79
  6. Step 6: Final answer
    x = 6,831.40

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Half scale
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Double scale
Find fourth proportional to 8,727.79, 12,044.55 and 4,951.21
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.