Home / 5,239.71-7,230.22-2,881.40

Finding the Fourth Proportional to 5,239.71, 7,230.22 and 2,881.40

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Solution

The fourth proportional to 5,239.71, 7,230.22 and 2,881.40 is: 3,976.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,239.71 : 7,230.22 = 2,881.40 : x
  2. Step 2: Convert to fraction form
    5,239.71/7,230.22 = 2,881.40/x
  3. Step 3: Cross multiply
    5,239.71x = 7,230.22 × 2,881.40
  4. Step 4: Simplify right side
    5,239.71x = 20,833,112.55
  5. Step 5: Solve for x
    x = 20,833,112.55/5,239.71
  6. Step 6: Final answer
    x = 3,976.00

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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.