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Finding the Fourth Proportional to 2,608.44, 3,913.20 and 877.20

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Solution

The fourth proportional to 2,608.44, 3,913.20 and 877.20 is: 1,315.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,608.44 : 3,913.20 = 877.20 : x
  2. Step 2: Convert to fraction form
    2,608.44/3,913.20 = 877.20/x
  3. Step 3: Cross multiply
    2,608.44x = 3,913.20 × 877.20
  4. Step 4: Simplify right side
    2,608.44x = 3,432,659.04
  5. Step 5: Solve for x
    x = 3,432,659.04/2,608.44
  6. Step 6: Final answer
    x = 1,315.98

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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.