Home / 7,912.71-10,920.29-4,725.98

Finding the Fourth Proportional to 7,912.71, 10,920.29 and 4,725.98

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Solution

The fourth proportional to 7,912.71, 10,920.29 and 4,725.98 is: 6,522.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.71 : 10,920.29 = 4,725.98 : x
  2. Step 2: Convert to fraction form
    7,912.71/10,920.29 = 4,725.98/x
  3. Step 3: Cross multiply
    7,912.71x = 10,920.29 × 4,725.98
  4. Step 4: Simplify right side
    7,912.71x = 51,608,993.90
  5. Step 5: Solve for x
    x = 51,608,993.90/7,912.71
  6. Step 6: Final answer
    x = 6,522.29

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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.