Home / 7,125.24-10,692.72-4,278.12

Finding the Fourth Proportional to 7,125.24, 10,692.72 and 4,278.12

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Solution

The fourth proportional to 7,125.24, 10,692.72 and 4,278.12 is: 6,420.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,125.24 : 10,692.72 = 4,278.12 : x
  2. Step 2: Convert to fraction form
    7,125.24/10,692.72 = 4,278.12/x
  3. Step 3: Cross multiply
    7,125.24x = 10,692.72 × 4,278.12
  4. Step 4: Simplify right side
    7,125.24x = 45,744,739.29
  5. Step 5: Solve for x
    x = 45,744,739.29/7,125.24
  6. Step 6: Final answer
    x = 6,420.10

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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.