Home / 7,431.39-10,256.62-5,644.78

Finding the Fourth Proportional to 7,431.39, 10,256.62 and 5,644.78

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Solution

The fourth proportional to 7,431.39, 10,256.62 and 5,644.78 is: 7,790.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,431.39 : 10,256.62 = 5,644.78 : x
  2. Step 2: Convert to fraction form
    7,431.39/10,256.62 = 5,644.78/x
  3. Step 3: Cross multiply
    7,431.39x = 10,256.62 × 5,644.78
  4. Step 4: Simplify right side
    7,431.39x = 57,896,349.33
  5. Step 5: Solve for x
    x = 57,896,349.33/7,431.39
  6. Step 6: Final answer
    x = 7,790.79

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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.