Home / 5,245.53-7,238.25-2,887.20

Finding the Fourth Proportional to 5,245.53, 7,238.25 and 2,887.20

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Solution

The fourth proportional to 5,245.53, 7,238.25 and 2,887.20 is: 3,984.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.53 : 7,238.25 = 2,887.20 : x
  2. Step 2: Convert to fraction form
    5,245.53/7,238.25 = 2,887.20/x
  3. Step 3: Cross multiply
    5,245.53x = 7,238.25 × 2,887.20
  4. Step 4: Simplify right side
    5,245.53x = 20,898,275.40
  5. Step 5: Solve for x
    x = 20,898,275.40/5,245.53
  6. Step 6: Final answer
    x = 3,984.02

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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.