Home / 8,639.32-11,921.96-4,862.56

Finding the Fourth Proportional to 8,639.32, 11,921.96 and 4,862.56

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Solution

The fourth proportional to 8,639.32, 11,921.96 and 4,862.56 is: 6,710.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.32 : 11,921.96 = 4,862.56 : x
  2. Step 2: Convert to fraction form
    8,639.32/11,921.96 = 4,862.56/x
  3. Step 3: Cross multiply
    8,639.32x = 11,921.96 × 4,862.56
  4. Step 4: Simplify right side
    8,639.32x = 57,971,245.82
  5. Step 5: Solve for x
    x = 57,971,245.82/8,639.32
  6. Step 6: Final answer
    x = 6,710.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.