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Finding the Fourth Proportional to 6,903.70, 10,366.35 and 3,987.70

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Solution

The fourth proportional to 6,903.70, 10,366.35 and 3,987.70 is: 5,987.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,903.70 : 10,366.35 = 3,987.70 : x
  2. Step 2: Convert to fraction form
    6,903.70/10,366.35 = 3,987.70/x
  3. Step 3: Cross multiply
    6,903.70x = 10,366.35 × 3,987.70
  4. Step 4: Simplify right side
    6,903.70x = 41,337,893.90
  5. Step 5: Solve for x
    x = 41,337,893.90/6,903.70
  6. Step 6: Final answer
    x = 5,987.79

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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.