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Finding the Fourth Proportional to 8,497.13, 11,724.26 and 5,139.28

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Solution

The fourth proportional to 8,497.13, 11,724.26 and 5,139.28 is: 7,091.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,497.13 : 11,724.26 = 5,139.28 : x
  2. Step 2: Convert to fraction form
    8,497.13/11,724.26 = 5,139.28/x
  3. Step 3: Cross multiply
    8,497.13x = 11,724.26 × 5,139.28
  4. Step 4: Simplify right side
    8,497.13x = 60,254,243.89
  5. Step 5: Solve for x
    x = 60,254,243.89/8,497.13
  6. Step 6: Final answer
    x = 7,091.13

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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.