Home / 4,877.40-6,729-3,108.60

Finding the Fourth Proportional to 4,877.40, 6,729 and 3,108.60

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Solution

The fourth proportional to 4,877.40, 6,729 and 3,108.60 is: 4,288.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,877.40 : 6,729 = 3,108.60 : x
  2. Step 2: Convert to fraction form
    4,877.40/6,729 = 3,108.60/x
  3. Step 3: Cross multiply
    4,877.40x = 6,729 × 3,108.60
  4. Step 4: Simplify right side
    4,877.40x = 20,917,769.40
  5. Step 5: Solve for x
    x = 20,917,769.40/4,877.40
  6. Step 6: Final answer
    x = 4,288.71

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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.