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Finding the Fourth Proportional to 9,884.48, 13,646.16 and 7,888.64

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Solution

The fourth proportional to 9,884.48, 13,646.16 and 7,888.64 is: 10,890.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,884.48 : 13,646.16 = 7,888.64 : x
  2. Step 2: Convert to fraction form
    9,884.48/13,646.16 = 7,888.64/x
  3. Step 3: Cross multiply
    9,884.48x = 13,646.16 × 7,888.64
  4. Step 4: Simplify right side
    9,884.48x = 107,649,643.62
  5. Step 5: Solve for x
    x = 107,649,643.62/9,884.48
  6. Step 6: Final answer
    x = 10,890.77

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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.