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Finding the Fourth Proportional to 1,803.29, 2,705.49 and 878.72

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Solution

The fourth proportional to 1,803.29, 2,705.49 and 878.72 is: 1,318.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,803.29 : 2,705.49 = 878.72 : x
  2. Step 2: Convert to fraction form
    1,803.29/2,705.49 = 878.72/x
  3. Step 3: Cross multiply
    1,803.29x = 2,705.49 × 878.72
  4. Step 4: Simplify right side
    1,803.29x = 2,377,366.99
  5. Step 5: Solve for x
    x = 2,377,366.99/1,803.29
  6. Step 6: Final answer
    x = 1,318.35

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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.