Home / 10,570.92-15,855.18-2,780.34

Finding the Fourth Proportional to 10,570.92, 15,855.18 and 2,780.34

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Solution

The fourth proportional to 10,570.92, 15,855.18 and 2,780.34 is: 4,170.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,570.92 : 15,855.18 = 2,780.34 : x
  2. Step 2: Convert to fraction form
    10,570.92/15,855.18 = 2,780.34/x
  3. Step 3: Cross multiply
    10,570.92x = 15,855.18 × 2,780.34
  4. Step 4: Simplify right side
    10,570.92x = 44,082,791.16
  5. Step 5: Solve for x
    x = 44,082,791.16/10,570.92
  6. Step 6: Final answer
    x = 4,170.19

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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.