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Finding the Fourth Proportional to 8,649.40, 11,938.86 and 5,293.24

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Solution

The fourth proportional to 8,649.40, 11,938.86 and 5,293.24 is: 7,306.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,649.40 : 11,938.86 = 5,293.24 : x
  2. Step 2: Convert to fraction form
    8,649.40/11,938.86 = 5,293.24/x
  3. Step 3: Cross multiply
    8,649.40x = 11,938.86 × 5,293.24
  4. Step 4: Simplify right side
    8,649.40x = 63,195,251.31
  5. Step 5: Solve for x
    x = 63,195,251.31/8,649.40
  6. Step 6: Final answer
    x = 7,306.32

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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.