Home / 7,621.28-10,517.82-4,478.48

Finding the Fourth Proportional to 7,621.28, 10,517.82 and 4,478.48

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Solution

The fourth proportional to 7,621.28, 10,517.82 and 4,478.48 is: 6,180.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.28 : 10,517.82 = 4,478.48 : x
  2. Step 2: Convert to fraction form
    7,621.28/10,517.82 = 4,478.48/x
  3. Step 3: Cross multiply
    7,621.28x = 10,517.82 × 4,478.48
  4. Step 4: Simplify right side
    7,621.28x = 47,103,846.51
  5. Step 5: Solve for x
    x = 47,103,846.51/7,621.28
  6. Step 6: Final answer
    x = 6,180.57

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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.