Home / 1,492.18-2,240.43-1,081.78

Finding the Fourth Proportional to 1,492.18, 2,240.43 and 1,081.78

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Solution

The fourth proportional to 1,492.18, 2,240.43 and 1,081.78 is: 1,624.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,492.18 : 2,240.43 = 1,081.78 : x
  2. Step 2: Convert to fraction form
    1,492.18/2,240.43 = 1,081.78/x
  3. Step 3: Cross multiply
    1,492.18x = 2,240.43 × 1,081.78
  4. Step 4: Simplify right side
    1,492.18x = 2,423,652.37
  5. Step 5: Solve for x
    x = 2,423,652.37/1,492.18
  6. Step 6: Final answer
    x = 1,624.24

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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.