Home / 7,923.52-10,938.80-5,409.38

Finding the Fourth Proportional to 7,923.52, 10,938.80 and 5,409.38

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Solution

The fourth proportional to 7,923.52, 10,938.80 and 5,409.38 is: 7,467.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,923.52 : 10,938.80 = 5,409.38 : x
  2. Step 2: Convert to fraction form
    7,923.52/10,938.80 = 5,409.38/x
  3. Step 3: Cross multiply
    7,923.52x = 10,938.80 × 5,409.38
  4. Step 4: Simplify right side
    7,923.52x = 59,172,136.39
  5. Step 5: Solve for x
    x = 59,172,136.39/7,923.52
  6. Step 6: Final answer
    x = 7,467.91

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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.