Home / 3,031.20-4,181.76-2,192.40

Finding the Fourth Proportional to 3,031.20, 4,181.76 and 2,192.40

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Solution

The fourth proportional to 3,031.20, 4,181.76 and 2,192.40 is: 3,024.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.20 : 4,181.76 = 2,192.40 : x
  2. Step 2: Convert to fraction form
    3,031.20/4,181.76 = 2,192.40/x
  3. Step 3: Cross multiply
    3,031.20x = 4,181.76 × 2,192.40
  4. Step 4: Simplify right side
    3,031.20x = 9,168,090.62
  5. Step 5: Solve for x
    x = 9,168,090.62/3,031.20
  6. Step 6: Final answer
    x = 3,024.57

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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.