Home / 7,912.68-10,917.36-4,509.72

Finding the Fourth Proportional to 7,912.68, 10,917.36 and 4,509.72

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Solution

The fourth proportional to 7,912.68, 10,917.36 and 4,509.72 is: 6,222.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.68 : 10,917.36 = 4,509.72 : x
  2. Step 2: Convert to fraction form
    7,912.68/10,917.36 = 4,509.72/x
  3. Step 3: Cross multiply
    7,912.68x = 10,917.36 × 4,509.72
  4. Step 4: Simplify right side
    7,912.68x = 49,234,236.74
  5. Step 5: Solve for x
    x = 49,234,236.74/7,912.68
  6. Step 6: Final answer
    x = 6,222.19

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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.