Home / 6,408.10-9,612.15-3,127.60

Finding the Fourth Proportional to 6,408.10, 9,612.15 and 3,127.60

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Solution

The fourth proportional to 6,408.10, 9,612.15 and 3,127.60 is: 4,691.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,408.10 : 9,612.15 = 3,127.60 : x
  2. Step 2: Convert to fraction form
    6,408.10/9,612.15 = 3,127.60/x
  3. Step 3: Cross multiply
    6,408.10x = 9,612.15 × 3,127.60
  4. Step 4: Simplify right side
    6,408.10x = 30,062,960.34
  5. Step 5: Solve for x
    x = 30,062,960.34/6,408.10
  6. Step 6: Final answer
    x = 4,691.40

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Similar ratio
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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.