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Finding the Fourth Proportional to 7,326.84, 10,138.86 and 6,398.04

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Solution

The fourth proportional to 7,326.84, 10,138.86 and 6,398.04 is: 8,853.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,326.84 : 10,138.86 = 6,398.04 : x
  2. Step 2: Convert to fraction form
    7,326.84/10,138.86 = 6,398.04/x
  3. Step 3: Cross multiply
    7,326.84x = 10,138.86 × 6,398.04
  4. Step 4: Simplify right side
    7,326.84x = 64,868,831.83
  5. Step 5: Solve for x
    x = 64,868,831.83/7,326.84
  6. Step 6: Final answer
    x = 8,853.59

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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.