Home / 1,252.40-1,882.20-1,230.80

Finding the Fourth Proportional to 1,252.40, 1,882.20 and 1,230.80

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Solution

The fourth proportional to 1,252.40, 1,882.20 and 1,230.80 is: 1,849.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252.40 : 1,882.20 = 1,230.80 : x
  2. Step 2: Convert to fraction form
    1,252.40/1,882.20 = 1,230.80/x
  3. Step 3: Cross multiply
    1,252.40x = 1,882.20 × 1,230.80
  4. Step 4: Simplify right side
    1,252.40x = 2,316,611.76
  5. Step 5: Solve for x
    x = 2,316,611.76/1,252.40
  6. Step 6: Final answer
    x = 1,849.74

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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.