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Finding the Fourth Proportional to 2,589.78, 3,881.78 and 1,551.18

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Solution

The fourth proportional to 2,589.78, 3,881.78 and 1,551.18 is: 2,325.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,589.78 : 3,881.78 = 1,551.18 : x
  2. Step 2: Convert to fraction form
    2,589.78/3,881.78 = 1,551.18/x
  3. Step 3: Cross multiply
    2,589.78x = 3,881.78 × 1,551.18
  4. Step 4: Simplify right side
    2,589.78x = 6,021,339.50
  5. Step 5: Solve for x
    x = 6,021,339.50/2,589.78
  6. Step 6: Final answer
    x = 2,325.04

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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.