Home / 4,917.36-6,778.80-3,972.96

Finding the Fourth Proportional to 4,917.36, 6,778.80 and 3,972.96

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Solution

The fourth proportional to 4,917.36, 6,778.80 and 3,972.96 is: 5,476.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,917.36 : 6,778.80 = 3,972.96 : x
  2. Step 2: Convert to fraction form
    4,917.36/6,778.80 = 3,972.96/x
  3. Step 3: Cross multiply
    4,917.36x = 6,778.80 × 3,972.96
  4. Step 4: Simplify right side
    4,917.36x = 26,931,901.25
  5. Step 5: Solve for x
    x = 26,931,901.25/4,917.36
  6. Step 6: Final answer
    x = 5,476.90

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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.