Home / 3,042.90-4,200.39-1,995.30

Finding the Fourth Proportional to 3,042.90, 4,200.39 and 1,995.30

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Solution

The fourth proportional to 3,042.90, 4,200.39 and 1,995.30 is: 2,754.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,042.90 : 4,200.39 = 1,995.30 : x
  2. Step 2: Convert to fraction form
    3,042.90/4,200.39 = 1,995.30/x
  3. Step 3: Cross multiply
    3,042.90x = 4,200.39 × 1,995.30
  4. Step 4: Simplify right side
    3,042.90x = 8,381,038.17
  5. Step 5: Solve for x
    x = 8,381,038.17/3,042.90
  6. Step 6: Final answer
    x = 2,754.29

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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.