Home / 1,432.20-2,148.30-994.80

Finding the Fourth Proportional to 1,432.20, 2,148.30 and 994.80

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Solution

The fourth proportional to 1,432.20, 2,148.30 and 994.80 is: 1,492.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.20 : 2,148.30 = 994.80 : x
  2. Step 2: Convert to fraction form
    1,432.20/2,148.30 = 994.80/x
  3. Step 3: Cross multiply
    1,432.20x = 2,148.30 × 994.80
  4. Step 4: Simplify right side
    1,432.20x = 2,137,128.84
  5. Step 5: Solve for x
    x = 2,137,128.84/1,432.20
  6. Step 6: Final answer
    x = 1,492.20

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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.