Home / 8,412.23-12,613.96-3,142.91

Finding the Fourth Proportional to 8,412.23, 12,613.96 and 3,142.91

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Solution

The fourth proportional to 8,412.23, 12,613.96 and 3,142.91 is: 4,712.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,412.23 : 12,613.96 = 3,142.91 : x
  2. Step 2: Convert to fraction form
    8,412.23/12,613.96 = 3,142.91/x
  3. Step 3: Cross multiply
    8,412.23x = 12,613.96 × 3,142.91
  4. Step 4: Simplify right side
    8,412.23x = 39,644,541.02
  5. Step 5: Solve for x
    x = 39,644,541.02/8,412.23
  6. Step 6: Final answer
    x = 4,712.73

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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.