Home / 2,740.26-4,110.40-688.26

Finding the Fourth Proportional to 2,740.26, 4,110.40 and 688.26

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Solution

The fourth proportional to 2,740.26, 4,110.40 and 688.26 is: 1,032.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.26 : 4,110.40 = 688.26 : x
  2. Step 2: Convert to fraction form
    2,740.26/4,110.40 = 688.26/x
  3. Step 3: Cross multiply
    2,740.26x = 4,110.40 × 688.26
  4. Step 4: Simplify right side
    2,740.26x = 2,829,023.90
  5. Step 5: Solve for x
    x = 2,829,023.90/2,740.26
  6. Step 6: Final answer
    x = 1,032.39

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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.