Home / 1,561.28-2,341.60-587.20

Finding the Fourth Proportional to 1,561.28, 2,341.60 and 587.20

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Solution

The fourth proportional to 1,561.28, 2,341.60 and 587.20 is: 880.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.28 : 2,341.60 = 587.20 : x
  2. Step 2: Convert to fraction form
    1,561.28/2,341.60 = 587.20/x
  3. Step 3: Cross multiply
    1,561.28x = 2,341.60 × 587.20
  4. Step 4: Simplify right side
    1,561.28x = 1,374,987.52
  5. Step 5: Solve for x
    x = 1,374,987.52/1,561.28
  6. Step 6: Final answer
    x = 880.68

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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.