Home / 7,021.16-9,688.25-3,996.35

Finding the Fourth Proportional to 7,021.16, 9,688.25 and 3,996.35

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Solution

The fourth proportional to 7,021.16, 9,688.25 and 3,996.35 is: 5,514.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.16 : 9,688.25 = 3,996.35 : x
  2. Step 2: Convert to fraction form
    7,021.16/9,688.25 = 3,996.35/x
  3. Step 3: Cross multiply
    7,021.16x = 9,688.25 × 3,996.35
  4. Step 4: Simplify right side
    7,021.16x = 38,717,637.89
  5. Step 5: Solve for x
    x = 38,717,637.89/7,021.16
  6. Step 6: Final answer
    x = 5,514.42

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Half scale
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Double scale
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Similar ratio
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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.