Home / 9,107.24-12,561.28-6,869.21

Finding the Fourth Proportional to 9,107.24, 12,561.28 and 6,869.21

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Solution

The fourth proportional to 9,107.24, 12,561.28 and 6,869.21 is: 9,474.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,107.24 : 12,561.28 = 6,869.21 : x
  2. Step 2: Convert to fraction form
    9,107.24/12,561.28 = 6,869.21/x
  3. Step 3: Cross multiply
    9,107.24x = 12,561.28 × 6,869.21
  4. Step 4: Simplify right side
    9,107.24x = 86,285,990.21
  5. Step 5: Solve for x
    x = 86,285,990.21/9,107.24
  6. Step 6: Final answer
    x = 9,474.44

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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.