Home / 3,139.08-4,333.10-2,695.20

Finding the Fourth Proportional to 3,139.08, 4,333.10 and 2,695.20

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Solution

The fourth proportional to 3,139.08, 4,333.10 and 2,695.20 is: 3,720.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.08 : 4,333.10 = 2,695.20 : x
  2. Step 2: Convert to fraction form
    3,139.08/4,333.10 = 2,695.20/x
  3. Step 3: Cross multiply
    3,139.08x = 4,333.10 × 2,695.20
  4. Step 4: Simplify right side
    3,139.08x = 11,678,557.64
  5. Step 5: Solve for x
    x = 11,678,557.64/3,139.08
  6. Step 6: Final answer
    x = 3,720.38

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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.