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Finding the Fourth Proportional to 1,878.29, 2,815.29 and 1,146.24

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Solution

The fourth proportional to 1,878.29, 2,815.29 and 1,146.24 is: 1,718.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.29 : 2,815.29 = 1,146.24 : x
  2. Step 2: Convert to fraction form
    1,878.29/2,815.29 = 1,146.24/x
  3. Step 3: Cross multiply
    1,878.29x = 2,815.29 × 1,146.24
  4. Step 4: Simplify right side
    1,878.29x = 3,226,998.01
  5. Step 5: Solve for x
    x = 3,226,998.01/1,878.29
  6. Step 6: Final answer
    x = 1,718.05

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1.5x scale

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.