Home / 7,813.20-10,787.26-6,972.46

Finding the Fourth Proportional to 7,813.20, 10,787.26 and 6,972.46

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Solution

The fourth proportional to 7,813.20, 10,787.26 and 6,972.46 is: 9,626.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,813.20 : 10,787.26 = 6,972.46 : x
  2. Step 2: Convert to fraction form
    7,813.20/10,787.26 = 6,972.46/x
  3. Step 3: Cross multiply
    7,813.20x = 10,787.26 × 6,972.46
  4. Step 4: Simplify right side
    7,813.20x = 75,213,694.46
  5. Step 5: Solve for x
    x = 75,213,694.46/7,813.20
  6. Step 6: Final answer
    x = 9,626.49

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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.