Home / 7,236.20-9,987.78-4,093.40

Finding the Fourth Proportional to 7,236.20, 9,987.78 and 4,093.40

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Solution

The fourth proportional to 7,236.20, 9,987.78 and 4,093.40 is: 5,649.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,236.20 : 9,987.78 = 4,093.40 : x
  2. Step 2: Convert to fraction form
    7,236.20/9,987.78 = 4,093.40/x
  3. Step 3: Cross multiply
    7,236.20x = 9,987.78 × 4,093.40
  4. Step 4: Simplify right side
    7,236.20x = 40,883,978.65
  5. Step 5: Solve for x
    x = 40,883,978.65/7,236.20
  6. Step 6: Final answer
    x = 5,649.92

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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.