Home / 7,140.34-10,712.03-2,209.87

Finding the Fourth Proportional to 7,140.34, 10,712.03 and 2,209.87

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Solution

The fourth proportional to 7,140.34, 10,712.03 and 2,209.87 is: 3,315.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.34 : 10,712.03 = 2,209.87 : x
  2. Step 2: Convert to fraction form
    7,140.34/10,712.03 = 2,209.87/x
  3. Step 3: Cross multiply
    7,140.34x = 10,712.03 × 2,209.87
  4. Step 4: Simplify right side
    7,140.34x = 23,672,193.74
  5. Step 5: Solve for x
    x = 23,672,193.74/7,140.34
  6. Step 6: Final answer
    x = 3,315.28

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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.