Home / 2,586.81-3,876.36-1,125.16

Finding the Fourth Proportional to 2,586.81, 3,876.36 and 1,125.16

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Solution

The fourth proportional to 2,586.81, 3,876.36 and 1,125.16 is: 1,686.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,586.81 : 3,876.36 = 1,125.16 : x
  2. Step 2: Convert to fraction form
    2,586.81/3,876.36 = 1,125.16/x
  3. Step 3: Cross multiply
    2,586.81x = 3,876.36 × 1,125.16
  4. Step 4: Simplify right side
    2,586.81x = 4,361,525.22
  5. Step 5: Solve for x
    x = 4,361,525.22/2,586.81
  6. Step 6: Final answer
    x = 1,686.06

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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.