Home / 7,236.25-9,979.18-4,720.30

Finding the Fourth Proportional to 7,236.25, 9,979.18 and 4,720.30

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Solution

The fourth proportional to 7,236.25, 9,979.18 and 4,720.30 is: 6,509.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,236.25 : 9,979.18 = 4,720.30 : x
  2. Step 2: Convert to fraction form
    7,236.25/9,979.18 = 4,720.30/x
  3. Step 3: Cross multiply
    7,236.25x = 9,979.18 × 4,720.30
  4. Step 4: Simplify right side
    7,236.25x = 47,104,723.35
  5. Step 5: Solve for x
    x = 47,104,723.35/7,236.25
  6. Step 6: Final answer
    x = 6,509.55

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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.