Home / 1,176.07-1,630.40-1,113.65

Finding the Fourth Proportional to 1,176.07, 1,630.40 and 1,113.65

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Solution

The fourth proportional to 1,176.07, 1,630.40 and 1,113.65 is: 1,543.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.07 : 1,630.40 = 1,113.65 : x
  2. Step 2: Convert to fraction form
    1,176.07/1,630.40 = 1,113.65/x
  3. Step 3: Cross multiply
    1,176.07x = 1,630.40 × 1,113.65
  4. Step 4: Simplify right side
    1,176.07x = 1,815,694.96
  5. Step 5: Solve for x
    x = 1,815,694.96/1,176.07
  6. Step 6: Final answer
    x = 1,543.87

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.