Home / 7,912.64-10,919.24-5,220.56

Finding the Fourth Proportional to 7,912.64, 10,919.24 and 5,220.56

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Solution

The fourth proportional to 7,912.64, 10,919.24 and 5,220.56 is: 7,204.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.64 : 10,919.24 = 5,220.56 : x
  2. Step 2: Convert to fraction form
    7,912.64/10,919.24 = 5,220.56/x
  3. Step 3: Cross multiply
    7,912.64x = 10,919.24 × 5,220.56
  4. Step 4: Simplify right side
    7,912.64x = 57,004,547.57
  5. Step 5: Solve for x
    x = 57,004,547.57/7,912.64
  6. Step 6: Final answer
    x = 7,204.24

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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.