Home / 7,925.72-10,912.55-6,728.19

Finding the Fourth Proportional to 7,925.72, 10,912.55 and 6,728.19

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Solution

The fourth proportional to 7,925.72, 10,912.55 and 6,728.19 is: 9,263.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,925.72 : 10,912.55 = 6,728.19 : x
  2. Step 2: Convert to fraction form
    7,925.72/10,912.55 = 6,728.19/x
  3. Step 3: Cross multiply
    7,925.72x = 10,912.55 × 6,728.19
  4. Step 4: Simplify right side
    7,925.72x = 73,421,676.14
  5. Step 5: Solve for x
    x = 73,421,676.14/7,925.72
  6. Step 6: Final answer
    x = 9,263.73

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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.