Home / 8,721.30-13,082.40-2,878.37

Finding the Fourth Proportional to 8,721.30, 13,082.40 and 2,878.37

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Solution

The fourth proportional to 8,721.30, 13,082.40 and 2,878.37 is: 4,317.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.30 : 13,082.40 = 2,878.37 : x
  2. Step 2: Convert to fraction form
    8,721.30/13,082.40 = 2,878.37/x
  3. Step 3: Cross multiply
    8,721.30x = 13,082.40 × 2,878.37
  4. Step 4: Simplify right side
    8,721.30x = 37,655,922.28
  5. Step 5: Solve for x
    x = 37,655,922.28/8,721.30
  6. Step 6: Final answer
    x = 4,317.70

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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.