Home / 2,087.20-3,130.84-932.72

Finding the Fourth Proportional to 2,087.20, 3,130.84 and 932.72

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Solution

The fourth proportional to 2,087.20, 3,130.84 and 932.72 is: 1,399.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.20 : 3,130.84 = 932.72 : x
  2. Step 2: Convert to fraction form
    2,087.20/3,130.84 = 932.72/x
  3. Step 3: Cross multiply
    2,087.20x = 3,130.84 × 932.72
  4. Step 4: Simplify right side
    2,087.20x = 2,920,197.08
  5. Step 5: Solve for x
    x = 2,920,197.08/2,087.20
  6. Step 6: Final answer
    x = 1,399.10

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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.