Home / 8,912.49-13,364.23-5,215.83

Finding the Fourth Proportional to 8,912.49, 13,364.23 and 5,215.83

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Solution

The fourth proportional to 8,912.49, 13,364.23 and 5,215.83 is: 7,821.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.49 : 13,364.23 = 5,215.83 : x
  2. Step 2: Convert to fraction form
    8,912.49/13,364.23 = 5,215.83/x
  3. Step 3: Cross multiply
    8,912.49x = 13,364.23 × 5,215.83
  4. Step 4: Simplify right side
    8,912.49x = 69,705,551.76
  5. Step 5: Solve for x
    x = 69,705,551.76/8,912.49
  6. Step 6: Final answer
    x = 7,821.11

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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.