Home / 3,147.12-4,347.45-2,981.04

Finding the Fourth Proportional to 3,147.12, 4,347.45 and 2,981.04

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Solution

The fourth proportional to 3,147.12, 4,347.45 and 2,981.04 is: 4,118.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.12 : 4,347.45 = 2,981.04 : x
  2. Step 2: Convert to fraction form
    3,147.12/4,347.45 = 2,981.04/x
  3. Step 3: Cross multiply
    3,147.12x = 4,347.45 × 2,981.04
  4. Step 4: Simplify right side
    3,147.12x = 12,959,922.35
  5. Step 5: Solve for x
    x = 12,959,922.35/3,147.12
  6. Step 6: Final answer
    x = 4,118.03

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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.