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Finding the Fourth Proportional to 9,979.68, 13,771.04 and 5,502.30

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Solution

The fourth proportional to 9,979.68, 13,771.04 and 5,502.30 is: 7,592.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979.68 : 13,771.04 = 5,502.30 : x
  2. Step 2: Convert to fraction form
    9,979.68/13,771.04 = 5,502.30/x
  3. Step 3: Cross multiply
    9,979.68x = 13,771.04 × 5,502.30
  4. Step 4: Simplify right side
    9,979.68x = 75,772,393.39
  5. Step 5: Solve for x
    x = 75,772,393.39/9,979.68
  6. Step 6: Final answer
    x = 7,592.67

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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.