Home / 5,645.34-7,791.01-3,127.69

Finding the Fourth Proportional to 5,645.34, 7,791.01 and 3,127.69

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Solution

The fourth proportional to 5,645.34, 7,791.01 and 3,127.69 is: 4,316.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,645.34 : 7,791.01 = 3,127.69 : x
  2. Step 2: Convert to fraction form
    5,645.34/7,791.01 = 3,127.69/x
  3. Step 3: Cross multiply
    5,645.34x = 7,791.01 × 3,127.69
  4. Step 4: Simplify right side
    5,645.34x = 24,367,864.07
  5. Step 5: Solve for x
    x = 24,367,864.07/5,645.34
  6. Step 6: Final answer
    x = 4,316.46

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Half scale
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Double scale
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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.