Home / 1,818.48-2,508.94-1,072.20

Finding the Fourth Proportional to 1,818.48, 2,508.94 and 1,072.20

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Solution

The fourth proportional to 1,818.48, 2,508.94 and 1,072.20 is: 1,479.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.48 : 2,508.94 = 1,072.20 : x
  2. Step 2: Convert to fraction form
    1,818.48/2,508.94 = 1,072.20/x
  3. Step 3: Cross multiply
    1,818.48x = 2,508.94 × 1,072.20
  4. Step 4: Simplify right side
    1,818.48x = 2,690,085.47
  5. Step 5: Solve for x
    x = 2,690,085.47/1,818.48
  6. Step 6: Final answer
    x = 1,479.30

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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.