Home / 7,912.53-10,920.69-4,555.08

Finding the Fourth Proportional to 7,912.53, 10,920.69 and 4,555.08

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Solution

The fourth proportional to 7,912.53, 10,920.69 and 4,555.08 is: 6,286.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.53 : 10,920.69 = 4,555.08 : x
  2. Step 2: Convert to fraction form
    7,912.53/10,920.69 = 4,555.08/x
  3. Step 3: Cross multiply
    7,912.53x = 10,920.69 × 4,555.08
  4. Step 4: Simplify right side
    7,912.53x = 49,744,616.61
  5. Step 5: Solve for x
    x = 49,744,616.61/7,912.53
  6. Step 6: Final answer
    x = 6,286.82

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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.