Home / 7,175.04-9,901.38-3,988.14

Finding the Fourth Proportional to 7,175.04, 9,901.38 and 3,988.14

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Solution

The fourth proportional to 7,175.04, 9,901.38 and 3,988.14 is: 5,503.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,175.04 : 9,901.38 = 3,988.14 : x
  2. Step 2: Convert to fraction form
    7,175.04/9,901.38 = 3,988.14/x
  3. Step 3: Cross multiply
    7,175.04x = 9,901.38 × 3,988.14
  4. Step 4: Simplify right side
    7,175.04x = 39,488,089.63
  5. Step 5: Solve for x
    x = 39,488,089.63/7,175.04
  6. Step 6: Final answer
    x = 5,503.54

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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.