Home / 5,250.78-7,876.23-2,130.86

Finding the Fourth Proportional to 5,250.78, 7,876.23 and 2,130.86

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Solution

The fourth proportional to 5,250.78, 7,876.23 and 2,130.86 is: 3,196.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,250.78 : 7,876.23 = 2,130.86 : x
  2. Step 2: Convert to fraction form
    5,250.78/7,876.23 = 2,130.86/x
  3. Step 3: Cross multiply
    5,250.78x = 7,876.23 × 2,130.86
  4. Step 4: Simplify right side
    5,250.78x = 16,783,143.46
  5. Step 5: Solve for x
    x = 16,783,143.46/5,250.78
  6. Step 6: Final answer
    x = 3,196.31

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1.5x scale

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.