Home / 8,639.56-11,922.15-4,862.80

Finding the Fourth Proportional to 8,639.56, 11,922.15 and 4,862.80

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Solution

The fourth proportional to 8,639.56, 11,922.15 and 4,862.80 is: 6,710.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.56 : 11,922.15 = 4,862.80 : x
  2. Step 2: Convert to fraction form
    8,639.56/11,922.15 = 4,862.80/x
  3. Step 3: Cross multiply
    8,639.56x = 11,922.15 × 4,862.80
  4. Step 4: Simplify right side
    8,639.56x = 57,975,031.02
  5. Step 5: Solve for x
    x = 57,975,031.02/8,639.56
  6. Step 6: Final answer
    x = 6,710.41

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1.5x scale

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.