Home / 1,182.11-1,631.66-710.08

Finding the Fourth Proportional to 1,182.11, 1,631.66 and 710.08

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Solution

The fourth proportional to 1,182.11, 1,631.66 and 710.08 is: 980.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,182.11 : 1,631.66 = 710.08 : x
  2. Step 2: Convert to fraction form
    1,182.11/1,631.66 = 710.08/x
  3. Step 3: Cross multiply
    1,182.11x = 1,631.66 × 710.08
  4. Step 4: Simplify right side
    1,182.11x = 1,158,614.68
  5. Step 5: Solve for x
    x = 1,158,614.68/1,182.11
  6. Step 6: Final answer
    x = 980.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.