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Finding the Fourth Proportional to 5,889.90, 8,128.71 and 3,532.62

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Solution

The fourth proportional to 5,889.90, 8,128.71 and 3,532.62 is: 4,875.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,889.90 : 8,128.71 = 3,532.62 : x
  2. Step 2: Convert to fraction form
    5,889.90/8,128.71 = 3,532.62/x
  3. Step 3: Cross multiply
    5,889.90x = 8,128.71 × 3,532.62
  4. Step 4: Simplify right side
    5,889.90x = 28,715,643.52
  5. Step 5: Solve for x
    x = 28,715,643.52/5,889.90
  6. Step 6: Final answer
    x = 4,875.40

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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.