Home / 7,158.70-9,874.45-5,172.17

Finding the Fourth Proportional to 7,158.70, 9,874.45 and 5,172.17

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Solution

The fourth proportional to 7,158.70, 9,874.45 and 5,172.17 is: 7,134.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,158.70 : 9,874.45 = 5,172.17 : x
  2. Step 2: Convert to fraction form
    7,158.70/9,874.45 = 5,172.17/x
  3. Step 3: Cross multiply
    7,158.70x = 9,874.45 × 5,172.17
  4. Step 4: Simplify right side
    7,158.70x = 51,072,334.06
  5. Step 5: Solve for x
    x = 51,072,334.06/7,158.70
  6. Step 6: Final answer
    x = 7,134.30

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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.