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Finding the Fourth Proportional to 7,624.80, 11,437.02 and 3,728.40

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Solution

The fourth proportional to 7,624.80, 11,437.02 and 3,728.40 is: 5,592.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,624.80 : 11,437.02 = 3,728.40 : x
  2. Step 2: Convert to fraction form
    7,624.80/11,437.02 = 3,728.40/x
  3. Step 3: Cross multiply
    7,624.80x = 11,437.02 × 3,728.40
  4. Step 4: Simplify right side
    7,624.80x = 42,641,785.37
  5. Step 5: Solve for x
    x = 42,641,785.37/7,624.80
  6. Step 6: Final answer
    x = 5,592.51

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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.