Home / 2,478.19-3,714.85-1,180.57

Finding the Fourth Proportional to 2,478.19, 3,714.85 and 1,180.57

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Solution

The fourth proportional to 2,478.19, 3,714.85 and 1,180.57 is: 1,769.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.19 : 3,714.85 = 1,180.57 : x
  2. Step 2: Convert to fraction form
    2,478.19/3,714.85 = 1,180.57/x
  3. Step 3: Cross multiply
    2,478.19x = 3,714.85 × 1,180.57
  4. Step 4: Simplify right side
    2,478.19x = 4,385,640.46
  5. Step 5: Solve for x
    x = 4,385,640.46/2,478.19
  6. Step 6: Final answer
    x = 1,769.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.