Home / 1,761.40-2,423.28-1,712.80

Finding the Fourth Proportional to 1,761.40, 2,423.28 and 1,712.80

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Solution

The fourth proportional to 1,761.40, 2,423.28 and 1,712.80 is: 2,356.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761.40 : 2,423.28 = 1,712.80 : x
  2. Step 2: Convert to fraction form
    1,761.40/2,423.28 = 1,712.80/x
  3. Step 3: Cross multiply
    1,761.40x = 2,423.28 × 1,712.80
  4. Step 4: Simplify right side
    1,761.40x = 4,150,593.98
  5. Step 5: Solve for x
    x = 4,150,593.98/1,761.40
  6. Step 6: Final answer
    x = 2,356.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.