Home / 7,528.47-10,388.86-4,171.09

Finding the Fourth Proportional to 7,528.47, 10,388.86 and 4,171.09

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Solution

The fourth proportional to 7,528.47, 10,388.86 and 4,171.09 is: 5,755.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,528.47 : 10,388.86 = 4,171.09 : x
  2. Step 2: Convert to fraction form
    7,528.47/10,388.86 = 4,171.09/x
  3. Step 3: Cross multiply
    7,528.47x = 10,388.86 × 4,171.09
  4. Step 4: Simplify right side
    7,528.47x = 43,332,833.66
  5. Step 5: Solve for x
    x = 43,332,833.66/7,528.47
  6. Step 6: Final answer
    x = 5,755.86

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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.