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Finding the Fourth Proportional to 6,308.70, 8,709.67 and 4,187.10

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Solution

The fourth proportional to 6,308.70, 8,709.67 and 4,187.10 is: 5,780.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,308.70 : 8,709.67 = 4,187.10 : x
  2. Step 2: Convert to fraction form
    6,308.70/8,709.67 = 4,187.10/x
  3. Step 3: Cross multiply
    6,308.70x = 8,709.67 × 4,187.10
  4. Step 4: Simplify right side
    6,308.70x = 36,468,259.26
  5. Step 5: Solve for x
    x = 36,468,259.26/6,308.70
  6. Step 6: Final answer
    x = 5,780.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.