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Finding the Fourth Proportional to 3,018.42, 4,527.61 and 938.42

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Solution

The fourth proportional to 3,018.42, 4,527.61 and 938.42 is: 1,407.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,018.42 : 4,527.61 = 938.42 : x
  2. Step 2: Convert to fraction form
    3,018.42/4,527.61 = 938.42/x
  3. Step 3: Cross multiply
    3,018.42x = 4,527.61 × 938.42
  4. Step 4: Simplify right side
    3,018.42x = 4,248,813.51
  5. Step 5: Solve for x
    x = 4,248,813.51/3,018.42
  6. Step 6: Final answer
    x = 1,407.63

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Similar ratio
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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.