Home / 1,131.17-1,688.01-1,008.45

Finding the Fourth Proportional to 1,131.17, 1,688.01 and 1,008.45

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Solution

The fourth proportional to 1,131.17, 1,688.01 and 1,008.45 is: 1,504.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131.17 : 1,688.01 = 1,008.45 : x
  2. Step 2: Convert to fraction form
    1,131.17/1,688.01 = 1,008.45/x
  3. Step 3: Cross multiply
    1,131.17x = 1,688.01 × 1,008.45
  4. Step 4: Simplify right side
    1,131.17x = 1,702,269.90
  5. Step 5: Solve for x
    x = 1,702,269.90/1,131.17
  6. Step 6: Final answer
    x = 1,504.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.