Home / 1,515.86-2,272.78-591.51

Finding the Fourth Proportional to 1,515.86, 2,272.78 and 591.51

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Solution

The fourth proportional to 1,515.86, 2,272.78 and 591.51 is: 886.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.86 : 2,272.78 = 591.51 : x
  2. Step 2: Convert to fraction form
    1,515.86/2,272.78 = 591.51/x
  3. Step 3: Cross multiply
    1,515.86x = 2,272.78 × 591.51
  4. Step 4: Simplify right side
    1,515.86x = 1,344,372.10
  5. Step 5: Solve for x
    x = 1,344,372.10/1,515.86
  6. Step 6: Final answer
    x = 886.87

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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.