Home / 7,913.64-10,920.62-5,221.56

Finding the Fourth Proportional to 7,913.64, 10,920.62 and 5,221.56

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Solution

The fourth proportional to 7,913.64, 10,920.62 and 5,221.56 is: 7,205.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,913.64 : 10,920.62 = 5,221.56 : x
  2. Step 2: Convert to fraction form
    7,913.64/10,920.62 = 5,221.56/x
  3. Step 3: Cross multiply
    7,913.64x = 10,920.62 × 5,221.56
  4. Step 4: Simplify right side
    7,913.64x = 57,022,672.57
  5. Step 5: Solve for x
    x = 57,022,672.57/7,913.64
  6. Step 6: Final answer
    x = 7,205.62

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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.