Home / 7,478.44-10,320.32-4,121.38

Finding the Fourth Proportional to 7,478.44, 10,320.32 and 4,121.38

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Solution

The fourth proportional to 7,478.44, 10,320.32 and 4,121.38 is: 5,687.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.44 : 10,320.32 = 4,121.38 : x
  2. Step 2: Convert to fraction form
    7,478.44/10,320.32 = 4,121.38/x
  3. Step 3: Cross multiply
    7,478.44x = 10,320.32 × 4,121.38
  4. Step 4: Simplify right side
    7,478.44x = 42,533,943.75
  5. Step 5: Solve for x
    x = 42,533,943.75/7,478.44
  6. Step 6: Final answer
    x = 5,687.54

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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.