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Finding the Fourth Proportional to 5,727.52, 7,881.18 and 5,556.21

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Solution

The fourth proportional to 5,727.52, 7,881.18 and 5,556.21 is: 7,645.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,727.52 : 7,881.18 = 5,556.21 : x
  2. Step 2: Convert to fraction form
    5,727.52/7,881.18 = 5,556.21/x
  3. Step 3: Cross multiply
    5,727.52x = 7,881.18 × 5,556.21
  4. Step 4: Simplify right side
    5,727.52x = 43,789,491.13
  5. Step 5: Solve for x
    x = 43,789,491.13/5,727.52
  6. Step 6: Final answer
    x = 7,645.45

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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.