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Finding the Fourth Proportional to 2,318.80, 3,472.80 and 2,272.40

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Solution

The fourth proportional to 2,318.80, 3,472.80 and 2,272.40 is: 3,403.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,318.80 : 3,472.80 = 2,272.40 : x
  2. Step 2: Convert to fraction form
    2,318.80/3,472.80 = 2,272.40/x
  3. Step 3: Cross multiply
    2,318.80x = 3,472.80 × 2,272.40
  4. Step 4: Simplify right side
    2,318.80x = 7,891,590.72
  5. Step 5: Solve for x
    x = 7,891,590.72/2,318.80
  6. Step 6: Final answer
    x = 3,403.31

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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.