Home / 8,639.37-11,921.72-4,862.75

Finding the Fourth Proportional to 8,639.37, 11,921.72 and 4,862.75

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Solution

The fourth proportional to 8,639.37, 11,921.72 and 4,862.75 is: 6,710.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.37 : 11,921.72 = 4,862.75 : x
  2. Step 2: Convert to fraction form
    8,639.37/11,921.72 = 4,862.75/x
  3. Step 3: Cross multiply
    8,639.37x = 11,921.72 × 4,862.75
  4. Step 4: Simplify right side
    8,639.37x = 57,972,260.01
  5. Step 5: Solve for x
    x = 57,972,260.01/8,639.37
  6. Step 6: Final answer
    x = 6,710.24

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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.