Home / 2,278.60-3,145.12-1,492.70

Finding the Fourth Proportional to 2,278.60, 3,145.12 and 1,492.70

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Solution

The fourth proportional to 2,278.60, 3,145.12 and 1,492.70 is: 2,060.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.60 : 3,145.12 = 1,492.70 : x
  2. Step 2: Convert to fraction form
    2,278.60/3,145.12 = 1,492.70/x
  3. Step 3: Cross multiply
    2,278.60x = 3,145.12 × 1,492.70
  4. Step 4: Simplify right side
    2,278.60x = 4,694,720.62
  5. Step 5: Solve for x
    x = 4,694,720.62/2,278.60
  6. Step 6: Final answer
    x = 2,060.35

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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.