Home / 3,165.12-4,748.70-1,521.78

Finding the Fourth Proportional to 3,165.12, 4,748.70 and 1,521.78

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Solution

The fourth proportional to 3,165.12, 4,748.70 and 1,521.78 is: 2,283.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,165.12 : 4,748.70 = 1,521.78 : x
  2. Step 2: Convert to fraction form
    3,165.12/4,748.70 = 1,521.78/x
  3. Step 3: Cross multiply
    3,165.12x = 4,748.70 × 1,521.78
  4. Step 4: Simplify right side
    3,165.12x = 7,226,476.69
  5. Step 5: Solve for x
    x = 7,226,476.69/3,165.12
  6. Step 6: Final answer
    x = 2,283.16

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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.