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Finding the Fourth Proportional to 5,891.52, 8,138.16 and 4,128.96

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Solution

The fourth proportional to 5,891.52, 8,138.16 and 4,128.96 is: 5,703.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,891.52 : 8,138.16 = 4,128.96 : x
  2. Step 2: Convert to fraction form
    5,891.52/8,138.16 = 4,128.96/x
  3. Step 3: Cross multiply
    5,891.52x = 8,138.16 × 4,128.96
  4. Step 4: Simplify right side
    5,891.52x = 33,602,137.11
  5. Step 5: Solve for x
    x = 33,602,137.11/5,891.52
  6. Step 6: Final answer
    x = 5,703.48

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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.