Home / 7,175.02-9,902.45-4,031.20

Finding the Fourth Proportional to 7,175.02, 9,902.45 and 4,031.20

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Solution

The fourth proportional to 7,175.02, 9,902.45 and 4,031.20 is: 5,563.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,175.02 : 9,902.45 = 4,031.20 : x
  2. Step 2: Convert to fraction form
    7,175.02/9,902.45 = 4,031.20/x
  3. Step 3: Cross multiply
    7,175.02x = 9,902.45 × 4,031.20
  4. Step 4: Simplify right side
    7,175.02x = 39,918,756.44
  5. Step 5: Solve for x
    x = 39,918,756.44/7,175.02
  6. Step 6: Final answer
    x = 5,563.57

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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.