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Finding the Fourth Proportional to 7,187.52, 10,784.70 and 3,724.76

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Solution

The fourth proportional to 7,187.52, 10,784.70 and 3,724.76 is: 5,588.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,187.52 : 10,784.70 = 3,724.76 : x
  2. Step 2: Convert to fraction form
    7,187.52/10,784.70 = 3,724.76/x
  3. Step 3: Cross multiply
    7,187.52x = 10,784.70 × 3,724.76
  4. Step 4: Simplify right side
    7,187.52x = 40,170,419.17
  5. Step 5: Solve for x
    x = 40,170,419.17/7,187.52
  6. Step 6: Final answer
    x = 5,588.91

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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.