Home / 8,759.08-12,087.78-4,981.78

Finding the Fourth Proportional to 8,759.08, 12,087.78 and 4,981.78

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Solution

The fourth proportional to 8,759.08, 12,087.78 and 4,981.78 is: 6,875.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,759.08 : 12,087.78 = 4,981.78 : x
  2. Step 2: Convert to fraction form
    8,759.08/12,087.78 = 4,981.78/x
  3. Step 3: Cross multiply
    8,759.08x = 12,087.78 × 4,981.78
  4. Step 4: Simplify right side
    8,759.08x = 60,218,660.65
  5. Step 5: Solve for x
    x = 60,218,660.65/8,759.08
  6. Step 6: Final answer
    x = 6,875.00

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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.