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Finding the Fourth Proportional to 3,018.39, 4,527.95 and 938.50

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Solution

The fourth proportional to 3,018.39, 4,527.95 and 938.50 is: 1,407.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,018.39 : 4,527.95 = 938.50 : x
  2. Step 2: Convert to fraction form
    3,018.39/4,527.95 = 938.50/x
  3. Step 3: Cross multiply
    3,018.39x = 4,527.95 × 938.50
  4. Step 4: Simplify right side
    3,018.39x = 4,249,481.08
  5. Step 5: Solve for x
    x = 4,249,481.08/3,018.39
  6. Step 6: Final answer
    x = 1,407.86

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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.