Home / 2,708.18-4,060.75-858.95

Finding the Fourth Proportional to 2,708.18, 4,060.75 and 858.95

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Solution

The fourth proportional to 2,708.18, 4,060.75 and 858.95 is: 1,287.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,708.18 : 4,060.75 = 858.95 : x
  2. Step 2: Convert to fraction form
    2,708.18/4,060.75 = 858.95/x
  3. Step 3: Cross multiply
    2,708.18x = 4,060.75 × 858.95
  4. Step 4: Simplify right side
    2,708.18x = 3,487,981.21
  5. Step 5: Solve for x
    x = 3,487,981.21/2,708.18
  6. Step 6: Final answer
    x = 1,287.94

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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.