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Finding the Fourth Proportional to 2,240.90, 3,354.95 and 1,376.90

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Solution

The fourth proportional to 2,240.90, 3,354.95 and 1,376.90 is: 2,061.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,240.90 : 3,354.95 = 1,376.90 : x
  2. Step 2: Convert to fraction form
    2,240.90/3,354.95 = 1,376.90/x
  3. Step 3: Cross multiply
    2,240.90x = 3,354.95 × 1,376.90
  4. Step 4: Simplify right side
    2,240.90x = 4,619,430.66
  5. Step 5: Solve for x
    x = 4,619,430.66/2,240.90
  6. Step 6: Final answer
    x = 2,061.42

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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.