Home / 7,942.50-10,921.77-6,892.74

Finding the Fourth Proportional to 7,942.50, 10,921.77 and 6,892.74

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Solution

The fourth proportional to 7,942.50, 10,921.77 and 6,892.74 is: 9,478.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,942.50 : 10,921.77 = 6,892.74 : x
  2. Step 2: Convert to fraction form
    7,942.50/10,921.77 = 6,892.74/x
  3. Step 3: Cross multiply
    7,942.50x = 10,921.77 × 6,892.74
  4. Step 4: Simplify right side
    7,942.50x = 75,280,920.95
  5. Step 5: Solve for x
    x = 75,280,920.95/7,942.50
  6. Step 6: Final answer
    x = 9,478.24

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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.