Home / 10,187.06-15,280.08-2,791.40

Finding the Fourth Proportional to 10,187.06, 15,280.08 and 2,791.40

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Solution

The fourth proportional to 10,187.06, 15,280.08 and 2,791.40 is: 4,186.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,187.06 : 15,280.08 = 2,791.40 : x
  2. Step 2: Convert to fraction form
    10,187.06/15,280.08 = 2,791.40/x
  3. Step 3: Cross multiply
    10,187.06x = 15,280.08 × 2,791.40
  4. Step 4: Simplify right side
    10,187.06x = 42,652,815.31
  5. Step 5: Solve for x
    x = 42,652,815.31/10,187.06
  6. Step 6: Final answer
    x = 4,186.96

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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.