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Finding the Fourth Proportional to 1,767.79, 2,652.12 and 1,248.81

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Solution

The fourth proportional to 1,767.79, 2,652.12 and 1,248.81 is: 1,873.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,767.79 : 2,652.12 = 1,248.81 : x
  2. Step 2: Convert to fraction form
    1,767.79/2,652.12 = 1,248.81/x
  3. Step 3: Cross multiply
    1,767.79x = 2,652.12 × 1,248.81
  4. Step 4: Simplify right side
    1,767.79x = 3,311,993.98
  5. Step 5: Solve for x
    x = 3,311,993.98/1,767.79
  6. Step 6: Final answer
    x = 1,873.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.