Home / 8,390.30-12,583.49-3,707.75

Finding the Fourth Proportional to 8,390.30, 12,583.49 and 3,707.75

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Solution

The fourth proportional to 8,390.30, 12,583.49 and 3,707.75 is: 5,560.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.30 : 12,583.49 = 3,707.75 : x
  2. Step 2: Convert to fraction form
    8,390.30/12,583.49 = 3,707.75/x
  3. Step 3: Cross multiply
    8,390.30x = 12,583.49 × 3,707.75
  4. Step 4: Simplify right side
    8,390.30x = 46,656,475.78
  5. Step 5: Solve for x
    x = 46,656,475.78/8,390.30
  6. Step 6: Final answer
    x = 5,560.77

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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.