Home / 8,153.92-11,257.14-5,172.28

Finding the Fourth Proportional to 8,153.92, 11,257.14 and 5,172.28

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Solution

The fourth proportional to 8,153.92, 11,257.14 and 5,172.28 is: 7,140.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,153.92 : 11,257.14 = 5,172.28 : x
  2. Step 2: Convert to fraction form
    8,153.92/11,257.14 = 5,172.28/x
  3. Step 3: Cross multiply
    8,153.92x = 11,257.14 × 5,172.28
  4. Step 4: Simplify right side
    8,153.92x = 58,225,080.08
  5. Step 5: Solve for x
    x = 58,225,080.08/8,153.92
  6. Step 6: Final answer
    x = 7,140.75

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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.