Home / 1,225.30-1,839.15-609.70

Finding the Fourth Proportional to 1,225.30, 1,839.15 and 609.70

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Solution

The fourth proportional to 1,225.30, 1,839.15 and 609.70 is: 915.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.30 : 1,839.15 = 609.70 : x
  2. Step 2: Convert to fraction form
    1,225.30/1,839.15 = 609.70/x
  3. Step 3: Cross multiply
    1,225.30x = 1,839.15 × 609.70
  4. Step 4: Simplify right side
    1,225.30x = 1,121,329.76
  5. Step 5: Solve for x
    x = 1,121,329.76/1,225.30
  6. Step 6: Final answer
    x = 915.15

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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.