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Finding the Fourth Proportional to 9,705.64, 13,393.38 and 5,514.28

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Solution

The fourth proportional to 9,705.64, 13,393.38 and 5,514.28 is: 7,609.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,705.64 : 13,393.38 = 5,514.28 : x
  2. Step 2: Convert to fraction form
    9,705.64/13,393.38 = 5,514.28/x
  3. Step 3: Cross multiply
    9,705.64x = 13,393.38 × 5,514.28
  4. Step 4: Simplify right side
    9,705.64x = 73,854,847.47
  5. Step 5: Solve for x
    x = 73,854,847.47/9,705.64
  6. Step 6: Final answer
    x = 7,609.48

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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.