Home / 3,001.23-4,501.91-921.19

Finding the Fourth Proportional to 3,001.23, 4,501.91 and 921.19

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Solution

The fourth proportional to 3,001.23, 4,501.91 and 921.19 is: 1,381.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,001.23 : 4,501.91 = 921.19 : x
  2. Step 2: Convert to fraction form
    3,001.23/4,501.91 = 921.19/x
  3. Step 3: Cross multiply
    3,001.23x = 4,501.91 × 921.19
  4. Step 4: Simplify right side
    3,001.23x = 4,147,114.47
  5. Step 5: Solve for x
    x = 4,147,114.47/3,001.23
  6. Step 6: Final answer
    x = 1,381.80

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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.