Home / 2,957.76-4,081.91-1,778.85

Finding the Fourth Proportional to 2,957.76, 4,081.91 and 1,778.85

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Solution

The fourth proportional to 2,957.76, 4,081.91 and 1,778.85 is: 2,454.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,957.76 : 4,081.91 = 1,778.85 : x
  2. Step 2: Convert to fraction form
    2,957.76/4,081.91 = 1,778.85/x
  3. Step 3: Cross multiply
    2,957.76x = 4,081.91 × 1,778.85
  4. Step 4: Simplify right side
    2,957.76x = 7,261,096.71
  5. Step 5: Solve for x
    x = 7,261,096.71/2,957.76
  6. Step 6: Final answer
    x = 2,454.93

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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.