Home / 7,129.94-10,679.07-5,474.30

Finding the Fourth Proportional to 7,129.94, 10,679.07 and 5,474.30

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Solution

The fourth proportional to 7,129.94, 10,679.07 and 5,474.30 is: 8,199.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.94 : 10,679.07 = 5,474.30 : x
  2. Step 2: Convert to fraction form
    7,129.94/10,679.07 = 5,474.30/x
  3. Step 3: Cross multiply
    7,129.94x = 10,679.07 × 5,474.30
  4. Step 4: Simplify right side
    7,129.94x = 58,460,432.90
  5. Step 5: Solve for x
    x = 58,460,432.90/7,129.94
  6. Step 6: Final answer
    x = 8,199.29

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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.