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Finding the Fourth Proportional to 2,389.71, 3,584.66 and 658.33

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Solution

The fourth proportional to 2,389.71, 3,584.66 and 658.33 is: 987.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.71 : 3,584.66 = 658.33 : x
  2. Step 2: Convert to fraction form
    2,389.71/3,584.66 = 658.33/x
  3. Step 3: Cross multiply
    2,389.71x = 3,584.66 × 658.33
  4. Step 4: Simplify right side
    2,389.71x = 2,359,889.22
  5. Step 5: Solve for x
    x = 2,359,889.22/2,389.71
  6. Step 6: Final answer
    x = 987.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.