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Finding the Fourth Proportional to 3,798.16, 5,236.86 and 2,947.66

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Solution

The fourth proportional to 3,798.16, 5,236.86 and 2,947.66 is: 4,064.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,798.16 : 5,236.86 = 2,947.66 : x
  2. Step 2: Convert to fraction form
    3,798.16/5,236.86 = 2,947.66/x
  3. Step 3: Cross multiply
    3,798.16x = 5,236.86 × 2,947.66
  4. Step 4: Simplify right side
    3,798.16x = 15,436,482.75
  5. Step 5: Solve for x
    x = 15,436,482.75/3,798.16
  6. Step 6: Final answer
    x = 4,064.20

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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.