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Finding the Fourth Proportional to 3,357.67, 5,038.20 and 1,508.40

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Solution

The fourth proportional to 3,357.67, 5,038.20 and 1,508.40 is: 2,263.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,357.67 : 5,038.20 = 1,508.40 : x
  2. Step 2: Convert to fraction form
    3,357.67/5,038.20 = 1,508.40/x
  3. Step 3: Cross multiply
    3,357.67x = 5,038.20 × 1,508.40
  4. Step 4: Simplify right side
    3,357.67x = 7,599,620.88
  5. Step 5: Solve for x
    x = 7,599,620.88/3,357.67
  6. Step 6: Final answer
    x = 2,263.36

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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.