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Finding the Fourth Proportional to 9,867.79, 13,620.03 and 6,337.16

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Solution

The fourth proportional to 9,867.79, 13,620.03 and 6,337.16 is: 8,746.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,867.79 : 13,620.03 = 6,337.16 : x
  2. Step 2: Convert to fraction form
    9,867.79/13,620.03 = 6,337.16/x
  3. Step 3: Cross multiply
    9,867.79x = 13,620.03 × 6,337.16
  4. Step 4: Simplify right side
    9,867.79x = 86,312,241.21
  5. Step 5: Solve for x
    x = 86,312,241.21/9,867.79
  6. Step 6: Final answer
    x = 8,746.87

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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.