Home / 2,117.37-3,175.65-731.61

Finding the Fourth Proportional to 2,117.37, 3,175.65 and 731.61

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Solution

The fourth proportional to 2,117.37, 3,175.65 and 731.61 is: 1,097.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.37 : 3,175.65 = 731.61 : x
  2. Step 2: Convert to fraction form
    2,117.37/3,175.65 = 731.61/x
  3. Step 3: Cross multiply
    2,117.37x = 3,175.65 × 731.61
  4. Step 4: Simplify right side
    2,117.37x = 2,323,337.30
  5. Step 5: Solve for x
    x = 2,323,337.30/2,117.37
  6. Step 6: Final answer
    x = 1,097.28

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1.5x scale

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.