Home / 1,650.78-2,280.96-1,440.18

Finding the Fourth Proportional to 1,650.78, 2,280.96 and 1,440.18

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Solution

The fourth proportional to 1,650.78, 2,280.96 and 1,440.18 is: 1,989.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,650.78 : 2,280.96 = 1,440.18 : x
  2. Step 2: Convert to fraction form
    1,650.78/2,280.96 = 1,440.18/x
  3. Step 3: Cross multiply
    1,650.78x = 2,280.96 × 1,440.18
  4. Step 4: Simplify right side
    1,650.78x = 3,284,992.97
  5. Step 5: Solve for x
    x = 3,284,992.97/1,650.78
  6. Step 6: Final answer
    x = 1,989.96

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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.