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Finding the Fourth Proportional to 9,861.71, 13,607.51 and 5,881.37

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Solution

The fourth proportional to 9,861.71, 13,607.51 and 5,881.37 is: 8,115.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,861.71 : 13,607.51 = 5,881.37 : x
  2. Step 2: Convert to fraction form
    9,861.71/13,607.51 = 5,881.37/x
  3. Step 3: Cross multiply
    9,861.71x = 13,607.51 × 5,881.37
  4. Step 4: Simplify right side
    9,861.71x = 80,030,703.64
  5. Step 5: Solve for x
    x = 80,030,703.64/9,861.71
  6. Step 6: Final answer
    x = 8,115.30

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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.