Home / 7,126.55-10,692.13-3,428.30

Finding the Fourth Proportional to 7,126.55, 10,692.13 and 3,428.30

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Solution

The fourth proportional to 7,126.55, 10,692.13 and 3,428.30 is: 5,143.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,126.55 : 10,692.13 = 3,428.30 : x
  2. Step 2: Convert to fraction form
    7,126.55/10,692.13 = 3,428.30/x
  3. Step 3: Cross multiply
    7,126.55x = 10,692.13 × 3,428.30
  4. Step 4: Simplify right side
    7,126.55x = 36,655,829.28
  5. Step 5: Solve for x
    x = 36,655,829.28/7,126.55
  6. Step 6: Final answer
    x = 5,143.56

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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.