Home / 5,246.21-7,239.43-2,887.90

Finding the Fourth Proportional to 5,246.21, 7,239.43 and 2,887.90

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Solution

The fourth proportional to 5,246.21, 7,239.43 and 2,887.90 is: 3,985.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,246.21 : 7,239.43 = 2,887.90 : x
  2. Step 2: Convert to fraction form
    5,246.21/7,239.43 = 2,887.90/x
  3. Step 3: Cross multiply
    5,246.21x = 7,239.43 × 2,887.90
  4. Step 4: Simplify right side
    5,246.21x = 20,906,749.90
  5. Step 5: Solve for x
    x = 20,906,749.90/5,246.21
  6. Step 6: Final answer
    x = 3,985.11

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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.