Home / 6,721.50-9,276.78-3,926.46

Finding the Fourth Proportional to 6,721.50, 9,276.78 and 3,926.46

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Solution

The fourth proportional to 6,721.50, 9,276.78 and 3,926.46 is: 5,419.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,721.50 : 9,276.78 = 3,926.46 : x
  2. Step 2: Convert to fraction form
    6,721.50/9,276.78 = 3,926.46/x
  3. Step 3: Cross multiply
    6,721.50x = 9,276.78 × 3,926.46
  4. Step 4: Simplify right side
    6,721.50x = 36,424,905.60
  5. Step 5: Solve for x
    x = 36,424,905.60/6,721.50
  6. Step 6: Final answer
    x = 5,419.16

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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.