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Finding the Fourth Proportional to 5,981.42, 8,955.12 and 3,903.78

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Solution

The fourth proportional to 5,981.42, 8,955.12 and 3,903.78 is: 5,844.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,981.42 : 8,955.12 = 3,903.78 : x
  2. Step 2: Convert to fraction form
    5,981.42/8,955.12 = 3,903.78/x
  3. Step 3: Cross multiply
    5,981.42x = 8,955.12 × 3,903.78
  4. Step 4: Simplify right side
    5,981.42x = 34,958,818.35
  5. Step 5: Solve for x
    x = 34,958,818.35/5,981.42
  6. Step 6: Final answer
    x = 5,844.57

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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.