Home / 5,255.15-7,877.85-1,970.39

Finding the Fourth Proportional to 5,255.15, 7,877.85 and 1,970.39

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Solution

The fourth proportional to 5,255.15, 7,877.85 and 1,970.39 is: 2,953.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,255.15 : 7,877.85 = 1,970.39 : x
  2. Step 2: Convert to fraction form
    5,255.15/7,877.85 = 1,970.39/x
  3. Step 3: Cross multiply
    5,255.15x = 7,877.85 × 1,970.39
  4. Step 4: Simplify right side
    5,255.15x = 15,522,436.86
  5. Step 5: Solve for x
    x = 15,522,436.86/5,255.15
  6. Step 6: Final answer
    x = 2,953.76

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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.