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Finding the Fourth Proportional to 7,247.40, 10,892.70 and 7,117.80

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Solution

The fourth proportional to 7,247.40, 10,892.70 and 7,117.80 is: 10,697.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,247.40 : 10,892.70 = 7,117.80 : x
  2. Step 2: Convert to fraction form
    7,247.40/10,892.70 = 7,117.80/x
  3. Step 3: Cross multiply
    7,247.40x = 10,892.70 × 7,117.80
  4. Step 4: Simplify right side
    7,247.40x = 77,532,060.06
  5. Step 5: Solve for x
    x = 77,532,060.06/7,247.40
  6. Step 6: Final answer
    x = 10,697.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.