Home / 1,117.12-1,541.92-674.92

Finding the Fourth Proportional to 1,117.12, 1,541.92 and 674.92

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Solution

The fourth proportional to 1,117.12, 1,541.92 and 674.92 is: 931.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.12 : 1,541.92 = 674.92 : x
  2. Step 2: Convert to fraction form
    1,117.12/1,541.92 = 674.92/x
  3. Step 3: Cross multiply
    1,117.12x = 1,541.92 × 674.92
  4. Step 4: Simplify right side
    1,117.12x = 1,040,672.65
  5. Step 5: Solve for x
    x = 1,040,672.65/1,117.12
  6. Step 6: Final answer
    x = 931.57

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1.5x scale

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.