Home / 8,687.32-13,030.78-2,113.54

Finding the Fourth Proportional to 8,687.32, 13,030.78 and 2,113.54

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Solution

The fourth proportional to 8,687.32, 13,030.78 and 2,113.54 is: 3,170.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.32 : 13,030.78 = 2,113.54 : x
  2. Step 2: Convert to fraction form
    8,687.32/13,030.78 = 2,113.54/x
  3. Step 3: Cross multiply
    8,687.32x = 13,030.78 × 2,113.54
  4. Step 4: Simplify right side
    8,687.32x = 27,541,074.76
  5. Step 5: Solve for x
    x = 27,541,074.76/8,687.32
  6. Step 6: Final answer
    x = 3,170.26

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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.