Home / 10,511.57-15,765.45-2,719.91

Finding the Fourth Proportional to 10,511.57, 15,765.45 and 2,719.91

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Solution

The fourth proportional to 10,511.57, 15,765.45 and 2,719.91 is: 4,079.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,511.57 : 15,765.45 = 2,719.91 : x
  2. Step 2: Convert to fraction form
    10,511.57/15,765.45 = 2,719.91/x
  3. Step 3: Cross multiply
    10,511.57x = 15,765.45 × 2,719.91
  4. Step 4: Simplify right side
    10,511.57x = 42,880,605.11
  5. Step 5: Solve for x
    x = 42,880,605.11/10,511.57
  6. Step 6: Final answer
    x = 4,079.37

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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.