Home / 3,685.20-5,519.70-1,492.80

Finding the Fourth Proportional to 3,685.20, 5,519.70 and 1,492.80

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Solution

The fourth proportional to 3,685.20, 5,519.70 and 1,492.80 is: 2,235.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.20 : 5,519.70 = 1,492.80 : x
  2. Step 2: Convert to fraction form
    3,685.20/5,519.70 = 1,492.80/x
  3. Step 3: Cross multiply
    3,685.20x = 5,519.70 × 1,492.80
  4. Step 4: Simplify right side
    3,685.20x = 8,239,808.16
  5. Step 5: Solve for x
    x = 8,239,808.16/3,685.20
  6. Step 6: Final answer
    x = 2,235.92

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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.