Home / 1,560.05-2,340.78-738.91

Finding the Fourth Proportional to 1,560.05, 2,340.78 and 738.91

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Solution

The fourth proportional to 1,560.05, 2,340.78 and 738.91 is: 1,108.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560.05 : 2,340.78 = 738.91 : x
  2. Step 2: Convert to fraction form
    1,560.05/2,340.78 = 738.91/x
  3. Step 3: Cross multiply
    1,560.05x = 2,340.78 × 738.91
  4. Step 4: Simplify right side
    1,560.05x = 1,729,625.75
  5. Step 5: Solve for x
    x = 1,729,625.75/1,560.05
  6. Step 6: Final answer
    x = 1,108.70

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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.