Home / 5,255.78-7,888.35-2,660.18

Finding the Fourth Proportional to 5,255.78, 7,888.35 and 2,660.18

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Solution

The fourth proportional to 5,255.78, 7,888.35 and 2,660.18 is: 3,992.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,255.78 : 7,888.35 = 2,660.18 : x
  2. Step 2: Convert to fraction form
    5,255.78/7,888.35 = 2,660.18/x
  3. Step 3: Cross multiply
    5,255.78x = 7,888.35 × 2,660.18
  4. Step 4: Simplify right side
    5,255.78x = 20,984,430.90
  5. Step 5: Solve for x
    x = 20,984,430.90/5,255.78
  6. Step 6: Final answer
    x = 3,992.64

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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.