Home / 8,639.21-11,921.96-4,862.37

Finding the Fourth Proportional to 8,639.21, 11,921.96 and 4,862.37

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Solution

The fourth proportional to 8,639.21, 11,921.96 and 4,862.37 is: 6,709.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.21 : 11,921.96 = 4,862.37 : x
  2. Step 2: Convert to fraction form
    8,639.21/11,921.96 = 4,862.37/x
  3. Step 3: Cross multiply
    8,639.21x = 11,921.96 × 4,862.37
  4. Step 4: Simplify right side
    8,639.21x = 57,968,956.33
  5. Step 5: Solve for x
    x = 57,968,956.33/8,639.21
  6. Step 6: Final answer
    x = 6,709.99

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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.