Home / 1,752.68-2,629.40-520.18

Finding the Fourth Proportional to 1,752.68, 2,629.40 and 520.18

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Solution

The fourth proportional to 1,752.68, 2,629.40 and 520.18 is: 780.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,752.68 : 2,629.40 = 520.18 : x
  2. Step 2: Convert to fraction form
    1,752.68/2,629.40 = 520.18/x
  3. Step 3: Cross multiply
    1,752.68x = 2,629.40 × 520.18
  4. Step 4: Simplify right side
    1,752.68x = 1,367,761.29
  5. Step 5: Solve for x
    x = 1,367,761.29/1,752.68
  6. Step 6: Final answer
    x = 780.38

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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.