Home / 9,099.89-12,559.05-5,121.77

Finding the Fourth Proportional to 9,099.89, 12,559.05 and 5,121.77

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Solution

The fourth proportional to 9,099.89, 12,559.05 and 5,121.77 is: 7,068.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,099.89 : 12,559.05 = 5,121.77 : x
  2. Step 2: Convert to fraction form
    9,099.89/12,559.05 = 5,121.77/x
  3. Step 3: Cross multiply
    9,099.89x = 12,559.05 × 5,121.77
  4. Step 4: Simplify right side
    9,099.89x = 64,324,596.92
  5. Step 5: Solve for x
    x = 64,324,596.92/9,099.89
  6. Step 6: Final answer
    x = 7,068.73

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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.