Home / 2,042.10-2,818.13-1,245.20

Finding the Fourth Proportional to 2,042.10, 2,818.13 and 1,245.20

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Solution

The fourth proportional to 2,042.10, 2,818.13 and 1,245.20 is: 1,718.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,042.10 : 2,818.13 = 1,245.20 : x
  2. Step 2: Convert to fraction form
    2,042.10/2,818.13 = 1,245.20/x
  3. Step 3: Cross multiply
    2,042.10x = 2,818.13 × 1,245.20
  4. Step 4: Simplify right side
    2,042.10x = 3,509,115.16
  5. Step 5: Solve for x
    x = 3,509,115.16/2,042.10
  6. Step 6: Final answer
    x = 1,718.39

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Half scale
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Double 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.