Home / 8,320.65-12,473.68-3,125.31

Finding the Fourth Proportional to 8,320.65, 12,473.68 and 3,125.31

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Solution

The fourth proportional to 8,320.65, 12,473.68 and 3,125.31 is: 4,685.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.65 : 12,473.68 = 3,125.31 : x
  2. Step 2: Convert to fraction form
    8,320.65/12,473.68 = 3,125.31/x
  3. Step 3: Cross multiply
    8,320.65x = 12,473.68 × 3,125.31
  4. Step 4: Simplify right side
    8,320.65x = 38,984,038.85
  5. Step 5: Solve for x
    x = 38,984,038.85/8,320.65
  6. Step 6: Final answer
    x = 4,685.22

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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.