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Finding the Fourth Proportional to 5,608.80, 7,740.72 and 3,371.40

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Solution

The fourth proportional to 5,608.80, 7,740.72 and 3,371.40 is: 4,652.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,608.80 : 7,740.72 = 3,371.40 : x
  2. Step 2: Convert to fraction form
    5,608.80/7,740.72 = 3,371.40/x
  3. Step 3: Cross multiply
    5,608.80x = 7,740.72 × 3,371.40
  4. Step 4: Simplify right side
    5,608.80x = 26,097,063.41
  5. Step 5: Solve for x
    x = 26,097,063.41/5,608.80
  6. Step 6: Final answer
    x = 4,652.88

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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.