Home / 1,561.28-2,340.39-1,397.25

Finding the Fourth Proportional to 1,561.28, 2,340.39 and 1,397.25

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Solution

The fourth proportional to 1,561.28, 2,340.39 and 1,397.25 is: 2,094.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.28 : 2,340.39 = 1,397.25 : x
  2. Step 2: Convert to fraction form
    1,561.28/2,340.39 = 1,397.25/x
  3. Step 3: Cross multiply
    1,561.28x = 2,340.39 × 1,397.25
  4. Step 4: Simplify right side
    1,561.28x = 3,270,115.17
  5. Step 5: Solve for x
    x = 3,270,115.17/1,561.28
  6. Step 6: Final answer
    x = 2,094.52

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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.