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Finding the Fourth Proportional to 3,572.72, 5,355.88 and 1,816.74

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Solution

The fourth proportional to 3,572.72, 5,355.88 and 1,816.74 is: 2,723.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,572.72 : 5,355.88 = 1,816.74 : x
  2. Step 2: Convert to fraction form
    3,572.72/5,355.88 = 1,816.74/x
  3. Step 3: Cross multiply
    3,572.72x = 5,355.88 × 1,816.74
  4. Step 4: Simplify right side
    3,572.72x = 9,730,214.65
  5. Step 5: Solve for x
    x = 9,730,214.65/3,572.72
  6. Step 6: Final answer
    x = 2,723.48

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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.