Home / 7,938.58-10,947.45-7,310.74

Finding the Fourth Proportional to 7,938.58, 10,947.45 and 7,310.74

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Solution

The fourth proportional to 7,938.58, 10,947.45 and 7,310.74 is: 10,081.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.58 : 10,947.45 = 7,310.74 : x
  2. Step 2: Convert to fraction form
    7,938.58/10,947.45 = 7,310.74/x
  3. Step 3: Cross multiply
    7,938.58x = 10,947.45 × 7,310.74
  4. Step 4: Simplify right side
    7,938.58x = 80,033,960.61
  5. Step 5: Solve for x
    x = 80,033,960.61/7,938.58
  6. Step 6: Final answer
    x = 10,081.65

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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.