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Finding the Fourth Proportional to 3,294.24, 4,942.32 and 985.76

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Solution

The fourth proportional to 3,294.24, 4,942.32 and 985.76 is: 1,478.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,294.24 : 4,942.32 = 985.76 : x
  2. Step 2: Convert to fraction form
    3,294.24/4,942.32 = 985.76/x
  3. Step 3: Cross multiply
    3,294.24x = 4,942.32 × 985.76
  4. Step 4: Simplify right side
    3,294.24x = 4,871,941.36
  5. Step 5: Solve for x
    x = 4,871,941.36/3,294.24
  6. Step 6: Final answer
    x = 1,478.93

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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.