Home / 3,175.20-4,762.80-3,126.60

Finding the Fourth Proportional to 3,175.20, 4,762.80 and 3,126.60

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Solution

The fourth proportional to 3,175.20, 4,762.80 and 3,126.60 is: 4,689.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.20 : 4,762.80 = 3,126.60 : x
  2. Step 2: Convert to fraction form
    3,175.20/4,762.80 = 3,126.60/x
  3. Step 3: Cross multiply
    3,175.20x = 4,762.80 × 3,126.60
  4. Step 4: Simplify right side
    3,175.20x = 14,891,370.48
  5. Step 5: Solve for x
    x = 14,891,370.48/3,175.20
  6. Step 6: Final answer
    x = 4,689.90

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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.