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Finding the Fourth Proportional to 1,863.15, 2,780.72 and 1,716.63

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Solution

The fourth proportional to 1,863.15, 2,780.72 and 1,716.63 is: 2,562.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,863.15 : 2,780.72 = 1,716.63 : x
  2. Step 2: Convert to fraction form
    1,863.15/2,780.72 = 1,716.63/x
  3. Step 3: Cross multiply
    1,863.15x = 2,780.72 × 1,716.63
  4. Step 4: Simplify right side
    1,863.15x = 4,773,458.79
  5. Step 5: Solve for x
    x = 4,773,458.79/1,863.15
  6. Step 6: Final answer
    x = 2,562.04

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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.