Home / 1,521.17-2,281.35-655.28

Finding the Fourth Proportional to 1,521.17, 2,281.35 and 655.28

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Solution

The fourth proportional to 1,521.17, 2,281.35 and 655.28 is: 982.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.17 : 2,281.35 = 655.28 : x
  2. Step 2: Convert to fraction form
    1,521.17/2,281.35 = 655.28/x
  3. Step 3: Cross multiply
    1,521.17x = 2,281.35 × 655.28
  4. Step 4: Simplify right side
    1,521.17x = 1,494,923.03
  5. Step 5: Solve for x
    x = 1,494,923.03/1,521.17
  6. Step 6: Final answer
    x = 982.75

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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.