Home / 2,127.32-2,934.87-1,230.90

Finding the Fourth Proportional to 2,127.32, 2,934.87 and 1,230.90

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Solution

The fourth proportional to 2,127.32, 2,934.87 and 1,230.90 is: 1,698.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.32 : 2,934.87 = 1,230.90 : x
  2. Step 2: Convert to fraction form
    2,127.32/2,934.87 = 1,230.90/x
  3. Step 3: Cross multiply
    2,127.32x = 2,934.87 × 1,230.90
  4. Step 4: Simplify right side
    2,127.32x = 3,612,523.20
  5. Step 5: Solve for x
    x = 3,612,523.20/2,127.32
  6. Step 6: Final answer
    x = 1,698.15

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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.