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Finding the Fourth Proportional to 6,861.31, 9,465.76 and 4,623.89

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Solution

The fourth proportional to 6,861.31, 9,465.76 and 4,623.89 is: 6,379.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,861.31 : 9,465.76 = 4,623.89 : x
  2. Step 2: Convert to fraction form
    6,861.31/9,465.76 = 4,623.89/x
  3. Step 3: Cross multiply
    6,861.31x = 9,465.76 × 4,623.89
  4. Step 4: Simplify right side
    6,861.31x = 43,768,591.46
  5. Step 5: Solve for x
    x = 43,768,591.46/6,861.31
  6. Step 6: Final answer
    x = 6,379.05

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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.