Home / 9,129.85-12,599.19-5,150.99

Finding the Fourth Proportional to 9,129.85, 12,599.19 and 5,150.99

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Solution

The fourth proportional to 9,129.85, 12,599.19 and 5,150.99 is: 7,108.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,129.85 : 12,599.19 = 5,150.99 : x
  2. Step 2: Convert to fraction form
    9,129.85/12,599.19 = 5,150.99/x
  3. Step 3: Cross multiply
    9,129.85x = 12,599.19 × 5,150.99
  4. Step 4: Simplify right side
    9,129.85x = 64,898,301.70
  5. Step 5: Solve for x
    x = 64,898,301.70/9,129.85
  6. Step 6: Final answer
    x = 7,108.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.