Home / 2,387.18-3,294.10-1,392.55

Finding the Fourth Proportional to 2,387.18, 3,294.10 and 1,392.55

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Solution

The fourth proportional to 2,387.18, 3,294.10 and 1,392.55 is: 1,921.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,387.18 : 3,294.10 = 1,392.55 : x
  2. Step 2: Convert to fraction form
    2,387.18/3,294.10 = 1,392.55/x
  3. Step 3: Cross multiply
    2,387.18x = 3,294.10 × 1,392.55
  4. Step 4: Simplify right side
    2,387.18x = 4,587,198.96
  5. Step 5: Solve for x
    x = 4,587,198.96/2,387.18
  6. Step 6: Final answer
    x = 1,921.60

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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.