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Finding the Fourth Proportional to 7,128.36, 10,692.02 and 2,448.18

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Solution

The fourth proportional to 7,128.36, 10,692.02 and 2,448.18 is: 3,672.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.36 : 10,692.02 = 2,448.18 : x
  2. Step 2: Convert to fraction form
    7,128.36/10,692.02 = 2,448.18/x
  3. Step 3: Cross multiply
    7,128.36x = 10,692.02 × 2,448.18
  4. Step 4: Simplify right side
    7,128.36x = 26,175,989.52
  5. Step 5: Solve for x
    x = 26,175,989.52/7,128.36
  6. Step 6: Final answer
    x = 3,672.09

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1.5x scale

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.