Home / 1,234.20-1,851.30-1,133.40

Finding the Fourth Proportional to 1,234.20, 1,851.30 and 1,133.40

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Solution

The fourth proportional to 1,234.20, 1,851.30 and 1,133.40 is: 1,700.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,234.20 : 1,851.30 = 1,133.40 : x
  2. Step 2: Convert to fraction form
    1,234.20/1,851.30 = 1,133.40/x
  3. Step 3: Cross multiply
    1,234.20x = 1,851.30 × 1,133.40
  4. Step 4: Simplify right side
    1,234.20x = 2,098,263.42
  5. Step 5: Solve for x
    x = 2,098,263.42/1,234.20
  6. Step 6: Final answer
    x = 1,700.10

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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.