Home / 7,128.11-10,692.30-2,448.09

Finding the Fourth Proportional to 7,128.11, 10,692.30 and 2,448.09

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Solution

The fourth proportional to 7,128.11, 10,692.30 and 2,448.09 is: 3,672.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.11 : 10,692.30 = 2,448.09 : x
  2. Step 2: Convert to fraction form
    7,128.11/10,692.30 = 2,448.09/x
  3. Step 3: Cross multiply
    7,128.11x = 10,692.30 × 2,448.09
  4. Step 4: Simplify right side
    7,128.11x = 26,175,712.71
  5. Step 5: Solve for x
    x = 26,175,712.71/7,128.11
  6. Step 6: Final answer
    x = 3,672.18

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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.