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Finding the Fourth Proportional to 3,890.12, 5,835.10 and 968.45

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Solution

The fourth proportional to 3,890.12, 5,835.10 and 968.45 is: 1,452.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.12 : 5,835.10 = 968.45 : x
  2. Step 2: Convert to fraction form
    3,890.12/5,835.10 = 968.45/x
  3. Step 3: Cross multiply
    3,890.12x = 5,835.10 × 968.45
  4. Step 4: Simplify right side
    3,890.12x = 5,651,002.60
  5. Step 5: Solve for x
    x = 5,651,002.60/3,890.12
  6. Step 6: Final answer
    x = 1,452.66

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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.