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Finding the Fourth Proportional to 1,855.87, 2,770.26 and 1,718.83

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Solution

The fourth proportional to 1,855.87, 2,770.26 and 1,718.83 is: 2,565.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855.87 : 2,770.26 = 1,718.83 : x
  2. Step 2: Convert to fraction form
    1,855.87/2,770.26 = 1,718.83/x
  3. Step 3: Cross multiply
    1,855.87x = 2,770.26 × 1,718.83
  4. Step 4: Simplify right side
    1,855.87x = 4,761,601.70
  5. Step 5: Solve for x
    x = 4,761,601.70/1,855.87
  6. Step 6: Final answer
    x = 2,565.70

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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.