Home / 5,421-8,132.22-2,343.72

Finding the Fourth Proportional to 5,421, 8,132.22 and 2,343.72

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Solution

The fourth proportional to 5,421, 8,132.22 and 2,343.72 is: 3,515.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421 : 8,132.22 = 2,343.72 : x
  2. Step 2: Convert to fraction form
    5,421/8,132.22 = 2,343.72/x
  3. Step 3: Cross multiply
    5,421x = 8,132.22 × 2,343.72
  4. Step 4: Simplify right side
    5,421x = 19,059,646.66
  5. Step 5: Solve for x
    x = 19,059,646.66/5,421
  6. Step 6: Final answer
    x = 3,515.89

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Double scale
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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.