Home / 3,125.18-4,687.41-816.86

Finding the Fourth Proportional to 3,125.18, 4,687.41 and 816.86

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Solution

The fourth proportional to 3,125.18, 4,687.41 and 816.86 is: 1,225.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.18 : 4,687.41 = 816.86 : x
  2. Step 2: Convert to fraction form
    3,125.18/4,687.41 = 816.86/x
  3. Step 3: Cross multiply
    3,125.18x = 4,687.41 × 816.86
  4. Step 4: Simplify right side
    3,125.18x = 3,828,957.73
  5. Step 5: Solve for x
    x = 3,828,957.73/3,125.18
  6. Step 6: Final answer
    x = 1,225.20

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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.