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Finding the Fourth Proportional to 2,598.58, 3,888.61 and 2,081.90

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Solution

The fourth proportional to 2,598.58, 3,888.61 and 2,081.90 is: 3,115.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,598.58 : 3,888.61 = 2,081.90 : x
  2. Step 2: Convert to fraction form
    2,598.58/3,888.61 = 2,081.90/x
  3. Step 3: Cross multiply
    2,598.58x = 3,888.61 × 2,081.90
  4. Step 4: Simplify right side
    2,598.58x = 8,095,701.68
  5. Step 5: Solve for x
    x = 8,095,701.68/2,598.58
  6. Step 6: Final answer
    x = 3,115.43

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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.