Home / 2,715.05-4,071.74-1,155.04

Finding the Fourth Proportional to 2,715.05, 4,071.74 and 1,155.04

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Solution

The fourth proportional to 2,715.05, 4,071.74 and 1,155.04 is: 1,732.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.05 : 4,071.74 = 1,155.04 : x
  2. Step 2: Convert to fraction form
    2,715.05/4,071.74 = 1,155.04/x
  3. Step 3: Cross multiply
    2,715.05x = 4,071.74 × 1,155.04
  4. Step 4: Simplify right side
    2,715.05x = 4,703,006.62
  5. Step 5: Solve for x
    x = 4,703,006.62/2,715.05
  6. Step 6: Final answer
    x = 1,732.20

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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.