Home / 7,175.46-9,901.10-3,988.54

Finding the Fourth Proportional to 7,175.46, 9,901.10 and 3,988.54

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Solution

The fourth proportional to 7,175.46, 9,901.10 and 3,988.54 is: 5,503.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,175.46 : 9,901.10 = 3,988.54 : x
  2. Step 2: Convert to fraction form
    7,175.46/9,901.10 = 3,988.54/x
  3. Step 3: Cross multiply
    7,175.46x = 9,901.10 × 3,988.54
  4. Step 4: Simplify right side
    7,175.46x = 39,490,933.39
  5. Step 5: Solve for x
    x = 39,490,933.39/7,175.46
  6. Step 6: Final answer
    x = 5,503.61

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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.