Home / 4,940.40-6,820.20-3,875.76

Finding the Fourth Proportional to 4,940.40, 6,820.20 and 3,875.76

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Solution

The fourth proportional to 4,940.40, 6,820.20 and 3,875.76 is: 5,350.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,940.40 : 6,820.20 = 3,875.76 : x
  2. Step 2: Convert to fraction form
    4,940.40/6,820.20 = 3,875.76/x
  3. Step 3: Cross multiply
    4,940.40x = 6,820.20 × 3,875.76
  4. Step 4: Simplify right side
    4,940.40x = 26,433,458.35
  5. Step 5: Solve for x
    x = 26,433,458.35/4,940.40
  6. Step 6: Final answer
    x = 5,350.47

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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.