Home / 3,078.90-4,247.10-2,192.76

Finding the Fourth Proportional to 3,078.90, 4,247.10 and 2,192.76

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Solution

The fourth proportional to 3,078.90, 4,247.10 and 2,192.76 is: 3,024.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.90 : 4,247.10 = 2,192.76 : x
  2. Step 2: Convert to fraction form
    3,078.90/4,247.10 = 2,192.76/x
  3. Step 3: Cross multiply
    3,078.90x = 4,247.10 × 2,192.76
  4. Step 4: Simplify right side
    3,078.90x = 9,312,871.00
  5. Step 5: Solve for x
    x = 9,312,871.00/3,078.90
  6. Step 6: Final answer
    x = 3,024.74

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Half scale
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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.