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Finding the Fourth Proportional to 2,807.92, 3,872.47 and 2,248.19

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Solution

The fourth proportional to 2,807.92, 3,872.47 and 2,248.19 is: 3,100.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,807.92 : 3,872.47 = 2,248.19 : x
  2. Step 2: Convert to fraction form
    2,807.92/3,872.47 = 2,248.19/x
  3. Step 3: Cross multiply
    2,807.92x = 3,872.47 × 2,248.19
  4. Step 4: Simplify right side
    2,807.92x = 8,706,050.51
  5. Step 5: Solve for x
    x = 8,706,050.51/2,807.92
  6. Step 6: Final answer
    x = 3,100.53

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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.