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Finding the Fourth Proportional to 8,726.19, 12,039.41 and 4,949.05

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Solution

The fourth proportional to 8,726.19, 12,039.41 and 4,949.05 is: 6,828.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,726.19 : 12,039.41 = 4,949.05 : x
  2. Step 2: Convert to fraction form
    8,726.19/12,039.41 = 4,949.05/x
  3. Step 3: Cross multiply
    8,726.19x = 12,039.41 × 4,949.05
  4. Step 4: Simplify right side
    8,726.19x = 59,583,642.06
  5. Step 5: Solve for x
    x = 59,583,642.06/8,726.19
  6. Step 6: Final answer
    x = 6,828.14

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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.