Home / 3,001.05-4,501.26-921.06

Finding the Fourth Proportional to 3,001.05, 4,501.26 and 921.06

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Solution

The fourth proportional to 3,001.05, 4,501.26 and 921.06 is: 1,381.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,001.05 : 4,501.26 = 921.06 : x
  2. Step 2: Convert to fraction form
    3,001.05/4,501.26 = 921.06/x
  3. Step 3: Cross multiply
    3,001.05x = 4,501.26 × 921.06
  4. Step 4: Simplify right side
    3,001.05x = 4,145,930.54
  5. Step 5: Solve for x
    x = 4,145,930.54/3,001.05
  6. Step 6: Final answer
    x = 1,381.49

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.