Home / 2,116.18-3,174.51-655.70

Finding the Fourth Proportional to 2,116.18, 3,174.51 and 655.70

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Solution

The fourth proportional to 2,116.18, 3,174.51 and 655.70 is: 983.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.18 : 3,174.51 = 655.70 : x
  2. Step 2: Convert to fraction form
    2,116.18/3,174.51 = 655.70/x
  3. Step 3: Cross multiply
    2,116.18x = 3,174.51 × 655.70
  4. Step 4: Simplify right side
    2,116.18x = 2,081,526.21
  5. Step 5: Solve for x
    x = 2,081,526.21/2,116.18
  6. Step 6: Final answer
    x = 983.62

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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.