Home / 1,727.90-2,591.40-753.78

Finding the Fourth Proportional to 1,727.90, 2,591.40 and 753.78

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Solution

The fourth proportional to 1,727.90, 2,591.40 and 753.78 is: 1,130.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,727.90 : 2,591.40 = 753.78 : x
  2. Step 2: Convert to fraction form
    1,727.90/2,591.40 = 753.78/x
  3. Step 3: Cross multiply
    1,727.90x = 2,591.40 × 753.78
  4. Step 4: Simplify right side
    1,727.90x = 1,953,345.49
  5. Step 5: Solve for x
    x = 1,953,345.49/1,727.90
  6. Step 6: Final answer
    x = 1,130.47

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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.