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Finding the Fourth Proportional to 1,817.10, 2,519.10 and 1,718.55

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Solution

The fourth proportional to 1,817.10, 2,519.10 and 1,718.55 is: 2,382.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,817.10 : 2,519.10 = 1,718.55 : x
  2. Step 2: Convert to fraction form
    1,817.10/2,519.10 = 1,718.55/x
  3. Step 3: Cross multiply
    1,817.10x = 2,519.10 × 1,718.55
  4. Step 4: Simplify right side
    1,817.10x = 4,329,199.31
  5. Step 5: Solve for x
    x = 4,329,199.31/1,817.10
  6. Step 6: Final answer
    x = 2,382.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.