Home / 8,421.83-12,637.30-3,494.87

Finding the Fourth Proportional to 8,421.83, 12,637.30 and 3,494.87

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Solution

The fourth proportional to 8,421.83, 12,637.30 and 3,494.87 is: 5,244.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.83 : 12,637.30 = 3,494.87 : x
  2. Step 2: Convert to fraction form
    8,421.83/12,637.30 = 3,494.87/x
  3. Step 3: Cross multiply
    8,421.83x = 12,637.30 × 3,494.87
  4. Step 4: Simplify right side
    8,421.83x = 44,165,720.65
  5. Step 5: Solve for x
    x = 44,165,720.65/8,421.83
  6. Step 6: Final answer
    x = 5,244.20

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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.