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Finding the Fourth Proportional to 2,473.40, 3,409.08 and 1,938.80

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Solution

The fourth proportional to 2,473.40, 3,409.08 and 1,938.80 is: 2,672.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,473.40 : 3,409.08 = 1,938.80 : x
  2. Step 2: Convert to fraction form
    2,473.40/3,409.08 = 1,938.80/x
  3. Step 3: Cross multiply
    2,473.40x = 3,409.08 × 1,938.80
  4. Step 4: Simplify right side
    2,473.40x = 6,609,524.30
  5. Step 5: Solve for x
    x = 6,609,524.30/2,473.40
  6. Step 6: Final answer
    x = 2,672.24

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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.