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Finding the Fourth Proportional to 2,669.08, 4,003.70 and 938.20

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Solution

The fourth proportional to 2,669.08, 4,003.70 and 938.20 is: 1,407.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,669.08 : 4,003.70 = 938.20 : x
  2. Step 2: Convert to fraction form
    2,669.08/4,003.70 = 938.20/x
  3. Step 3: Cross multiply
    2,669.08x = 4,003.70 × 938.20
  4. Step 4: Simplify right side
    2,669.08x = 3,756,271.34
  5. Step 5: Solve for x
    x = 3,756,271.34/2,669.08
  6. Step 6: Final answer
    x = 1,407.33

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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.