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Finding the Fourth Proportional to 7,555.38, 11,257.13 and 7,130.95

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Solution

The fourth proportional to 7,555.38, 11,257.13 and 7,130.95 is: 10,624.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,555.38 : 11,257.13 = 7,130.95 : x
  2. Step 2: Convert to fraction form
    7,555.38/11,257.13 = 7,130.95/x
  3. Step 3: Cross multiply
    7,555.38x = 11,257.13 × 7,130.95
  4. Step 4: Simplify right side
    7,555.38x = 80,274,044.07
  5. Step 5: Solve for x
    x = 80,274,044.07/7,555.38
  6. Step 6: Final answer
    x = 10,624.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.