Home / 6,891.21-9,510.17-4,239.50

Finding the Fourth Proportional to 6,891.21, 9,510.17 and 4,239.50

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Solution

The fourth proportional to 6,891.21, 9,510.17 and 4,239.50 is: 5,850.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,891.21 : 9,510.17 = 4,239.50 : x
  2. Step 2: Convert to fraction form
    6,891.21/9,510.17 = 4,239.50/x
  3. Step 3: Cross multiply
    6,891.21x = 9,510.17 × 4,239.50
  4. Step 4: Simplify right side
    6,891.21x = 40,318,296.97
  5. Step 5: Solve for x
    x = 40,318,296.97/6,891.21
  6. Step 6: Final answer
    x = 5,850.68

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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.