Home / 7,279.40-10,920.94-2,896.84

Finding the Fourth Proportional to 7,279.40, 10,920.94 and 2,896.84

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Solution

The fourth proportional to 7,279.40, 10,920.94 and 2,896.84 is: 4,345.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.40 : 10,920.94 = 2,896.84 : x
  2. Step 2: Convert to fraction form
    7,279.40/10,920.94 = 2,896.84/x
  3. Step 3: Cross multiply
    7,279.40x = 10,920.94 × 2,896.84
  4. Step 4: Simplify right side
    7,279.40x = 31,636,215.83
  5. Step 5: Solve for x
    x = 31,636,215.83/7,279.40
  6. Step 6: Final answer
    x = 4,345.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.