Home / 1,226.24-1,839.36-1,042.40

Finding the Fourth Proportional to 1,226.24, 1,839.36 and 1,042.40

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Solution

The fourth proportional to 1,226.24, 1,839.36 and 1,042.40 is: 1,563.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.24 : 1,839.36 = 1,042.40 : x
  2. Step 2: Convert to fraction form
    1,226.24/1,839.36 = 1,042.40/x
  3. Step 3: Cross multiply
    1,226.24x = 1,839.36 × 1,042.40
  4. Step 4: Simplify right side
    1,226.24x = 1,917,348.86
  5. Step 5: Solve for x
    x = 1,917,348.86/1,226.24
  6. Step 6: Final answer
    x = 1,563.60

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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.