Home / 1,265.28-1,899.12-1,187.52

Finding the Fourth Proportional to 1,265.28, 1,899.12 and 1,187.52

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Solution

The fourth proportional to 1,265.28, 1,899.12 and 1,187.52 is: 1,782.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265.28 : 1,899.12 = 1,187.52 : x
  2. Step 2: Convert to fraction form
    1,265.28/1,899.12 = 1,187.52/x
  3. Step 3: Cross multiply
    1,265.28x = 1,899.12 × 1,187.52
  4. Step 4: Simplify right side
    1,265.28x = 2,255,242.98
  5. Step 5: Solve for x
    x = 2,255,242.98/1,265.28
  6. Step 6: Final answer
    x = 1,782.41

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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.