Home / 7,905.43-10,918.69-5,248.22

Finding the Fourth Proportional to 7,905.43, 10,918.69 and 5,248.22

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Solution

The fourth proportional to 7,905.43, 10,918.69 and 5,248.22 is: 7,248.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905.43 : 10,918.69 = 5,248.22 : x
  2. Step 2: Convert to fraction form
    7,905.43/10,918.69 = 5,248.22/x
  3. Step 3: Cross multiply
    7,905.43x = 10,918.69 × 5,248.22
  4. Step 4: Simplify right side
    7,905.43x = 57,303,687.23
  5. Step 5: Solve for x
    x = 57,303,687.23/7,905.43
  6. Step 6: Final answer
    x = 7,248.65

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Double scale
Find fourth proportional to 7,906.43, 10,920.07 and 5,249.22
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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.