Home / 1,521.17-2,282.70-655.55

Finding the Fourth Proportional to 1,521.17, 2,282.70 and 655.55

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Solution

The fourth proportional to 1,521.17, 2,282.70 and 655.55 is: 983.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.17 : 2,282.70 = 655.55 : x
  2. Step 2: Convert to fraction form
    1,521.17/2,282.70 = 655.55/x
  3. Step 3: Cross multiply
    1,521.17x = 2,282.70 × 655.55
  4. Step 4: Simplify right side
    1,521.17x = 1,496,423.99
  5. Step 5: Solve for x
    x = 1,496,423.99/1,521.17
  6. Step 6: Final answer
    x = 983.73

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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.