Home / 5,112.50-7,055.25-2,874.35

Finding the Fourth Proportional to 5,112.50, 7,055.25 and 2,874.35

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Solution

The fourth proportional to 5,112.50, 7,055.25 and 2,874.35 is: 3,966.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.50 : 7,055.25 = 2,874.35 : x
  2. Step 2: Convert to fraction form
    5,112.50/7,055.25 = 2,874.35/x
  3. Step 3: Cross multiply
    5,112.50x = 7,055.25 × 2,874.35
  4. Step 4: Simplify right side
    5,112.50x = 20,279,257.84
  5. Step 5: Solve for x
    x = 20,279,257.84/5,112.50
  6. Step 6: Final answer
    x = 3,966.60

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Double scale
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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.