Home / 2,158.92-3,220.98-1,951.32

Finding the Fourth Proportional to 2,158.92, 3,220.98 and 1,951.32

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Solution

The fourth proportional to 2,158.92, 3,220.98 and 1,951.32 is: 2,911.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158.92 : 3,220.98 = 1,951.32 : x
  2. Step 2: Convert to fraction form
    2,158.92/3,220.98 = 1,951.32/x
  3. Step 3: Cross multiply
    2,158.92x = 3,220.98 × 1,951.32
  4. Step 4: Simplify right side
    2,158.92x = 6,285,162.69
  5. Step 5: Solve for x
    x = 6,285,162.69/2,158.92
  6. Step 6: Final answer
    x = 2,911.25

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.