Home / 2,957.21-4,081.19-1,778.25

Finding the Fourth Proportional to 2,957.21, 4,081.19 and 1,778.25

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Solution

The fourth proportional to 2,957.21, 4,081.19 and 1,778.25 is: 2,454.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,957.21 : 4,081.19 = 1,778.25 : x
  2. Step 2: Convert to fraction form
    2,957.21/4,081.19 = 1,778.25/x
  3. Step 3: Cross multiply
    2,957.21x = 4,081.19 × 1,778.25
  4. Step 4: Simplify right side
    2,957.21x = 7,257,382.53
  5. Step 5: Solve for x
    x = 7,257,382.53/2,957.21
  6. Step 6: Final answer
    x = 2,454.13

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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.