Home / 3,031.13-4,178.63-2,148.95

Finding the Fourth Proportional to 3,031.13, 4,178.63 and 2,148.95

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Solution

The fourth proportional to 3,031.13, 4,178.63 and 2,148.95 is: 2,962.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.13 : 4,178.63 = 2,148.95 : x
  2. Step 2: Convert to fraction form
    3,031.13/4,178.63 = 2,148.95/x
  3. Step 3: Cross multiply
    3,031.13x = 4,178.63 × 2,148.95
  4. Step 4: Simplify right side
    3,031.13x = 8,979,635.30
  5. Step 5: Solve for x
    x = 8,979,635.30/3,031.13
  6. Step 6: Final answer
    x = 2,962.48

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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.