Home / 1,339.28-2,013.02-1,310.57

Finding the Fourth Proportional to 1,339.28, 2,013.02 and 1,310.57

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Solution

The fourth proportional to 1,339.28, 2,013.02 and 1,310.57 is: 1,969.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339.28 : 2,013.02 = 1,310.57 : x
  2. Step 2: Convert to fraction form
    1,339.28/2,013.02 = 1,310.57/x
  3. Step 3: Cross multiply
    1,339.28x = 2,013.02 × 1,310.57
  4. Step 4: Simplify right side
    1,339.28x = 2,638,203.62
  5. Step 5: Solve for x
    x = 2,638,203.62/1,339.28
  6. Step 6: Final answer
    x = 1,969.87

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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.