Home / 9,579.28-13,219.32-5,387.44

Finding the Fourth Proportional to 9,579.28, 13,219.32 and 5,387.44

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Solution

The fourth proportional to 9,579.28, 13,219.32 and 5,387.44 is: 7,434.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,579.28 : 13,219.32 = 5,387.44 : x
  2. Step 2: Convert to fraction form
    9,579.28/13,219.32 = 5,387.44/x
  3. Step 3: Cross multiply
    9,579.28x = 13,219.32 × 5,387.44
  4. Step 4: Simplify right side
    9,579.28x = 71,218,293.34
  5. Step 5: Solve for x
    x = 71,218,293.34/9,579.28
  6. Step 6: Final answer
    x = 7,434.62

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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.