Home / 1,916.20-2,869.98-1,145.08

Finding the Fourth Proportional to 1,916.20, 2,869.98 and 1,145.08

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Solution

The fourth proportional to 1,916.20, 2,869.98 and 1,145.08 is: 1,715.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.20 : 2,869.98 = 1,145.08 : x
  2. Step 2: Convert to fraction form
    1,916.20/2,869.98 = 1,145.08/x
  3. Step 3: Cross multiply
    1,916.20x = 2,869.98 × 1,145.08
  4. Step 4: Simplify right side
    1,916.20x = 3,286,356.70
  5. Step 5: Solve for x
    x = 3,286,356.70/1,916.20
  6. Step 6: Final answer
    x = 1,715.04

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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.