Home / 5,246.78-7,871.30-2,615.70

Finding the Fourth Proportional to 5,246.78, 7,871.30 and 2,615.70

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Solution

The fourth proportional to 5,246.78, 7,871.30 and 2,615.70 is: 3,924.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,246.78 : 7,871.30 = 2,615.70 : x
  2. Step 2: Convert to fraction form
    5,246.78/7,871.30 = 2,615.70/x
  3. Step 3: Cross multiply
    5,246.78x = 7,871.30 × 2,615.70
  4. Step 4: Simplify right side
    5,246.78x = 20,588,946.33
  5. Step 5: Solve for x
    x = 20,588,946.33/5,246.78
  6. Step 6: Final answer
    x = 3,924.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.