Home / 1,780.20-2,666.46-1,492.20

Finding the Fourth Proportional to 1,780.20, 2,666.46 and 1,492.20

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Solution

The fourth proportional to 1,780.20, 2,666.46 and 1,492.20 is: 2,235.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.20 : 2,666.46 = 1,492.20 : x
  2. Step 2: Convert to fraction form
    1,780.20/2,666.46 = 1,492.20/x
  3. Step 3: Cross multiply
    1,780.20x = 2,666.46 × 1,492.20
  4. Step 4: Simplify right side
    1,780.20x = 3,978,891.61
  5. Step 5: Solve for x
    x = 3,978,891.61/1,780.20
  6. Step 6: Final answer
    x = 2,235.08

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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.