Home / 5,344.92-7,376.12-2,987.21

Finding the Fourth Proportional to 5,344.92, 7,376.12 and 2,987.21

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Solution

The fourth proportional to 5,344.92, 7,376.12 and 2,987.21 is: 4,122.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,344.92 : 7,376.12 = 2,987.21 : x
  2. Step 2: Convert to fraction form
    5,344.92/7,376.12 = 2,987.21/x
  3. Step 3: Cross multiply
    5,344.92x = 7,376.12 × 2,987.21
  4. Step 4: Simplify right side
    5,344.92x = 22,034,019.43
  5. Step 5: Solve for x
    x = 22,034,019.43/5,344.92
  6. Step 6: Final answer
    x = 4,122.42

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Half scale
Find fourth proportional to 10,689.84, 14,752.24 and 5,974.42
Double scale
Find fourth proportional to 5,345.92, 7,377.50 and 2,988.21
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.