Home / 2,586.08-3,881.60-1,125.68

Finding the Fourth Proportional to 2,586.08, 3,881.60 and 1,125.68

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Solution

The fourth proportional to 2,586.08, 3,881.60 and 1,125.68 is: 1,689.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,586.08 : 3,881.60 = 1,125.68 : x
  2. Step 2: Convert to fraction form
    2,586.08/3,881.60 = 1,125.68/x
  3. Step 3: Cross multiply
    2,586.08x = 3,881.60 × 1,125.68
  4. Step 4: Simplify right side
    2,586.08x = 4,369,439.49
  5. Step 5: Solve for x
    x = 4,369,439.49/2,586.08
  6. Step 6: Final answer
    x = 1,689.60

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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.