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Finding the Fourth Proportional to 3,520.79, 5,281.79 and 1,572.92

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Solution

The fourth proportional to 3,520.79, 5,281.79 and 1,572.92 is: 2,359.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.79 : 5,281.79 = 1,572.92 : x
  2. Step 2: Convert to fraction form
    3,520.79/5,281.79 = 1,572.92/x
  3. Step 3: Cross multiply
    3,520.79x = 5,281.79 × 1,572.92
  4. Step 4: Simplify right side
    3,520.79x = 8,307,798.85
  5. Step 5: Solve for x
    x = 8,307,798.85/3,520.79
  6. Step 6: Final answer
    x = 2,359.64

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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.