Home / 8,439.12-12,660.48-2,896.56

Finding the Fourth Proportional to 8,439.12, 12,660.48 and 2,896.56

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Solution

The fourth proportional to 8,439.12, 12,660.48 and 2,896.56 is: 4,345.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.12 : 12,660.48 = 2,896.56 : x
  2. Step 2: Convert to fraction form
    8,439.12/12,660.48 = 2,896.56/x
  3. Step 3: Cross multiply
    8,439.12x = 12,660.48 × 2,896.56
  4. Step 4: Simplify right side
    8,439.12x = 36,671,839.95
  5. Step 5: Solve for x
    x = 36,671,839.95/8,439.12
  6. Step 6: Final answer
    x = 4,345.46

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1.5x scale

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.