Home / 3,215.65-4,820.95-1,269.31

Finding the Fourth Proportional to 3,215.65, 4,820.95 and 1,269.31

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Solution

The fourth proportional to 3,215.65, 4,820.95 and 1,269.31 is: 1,902.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.65 : 4,820.95 = 1,269.31 : x
  2. Step 2: Convert to fraction form
    3,215.65/4,820.95 = 1,269.31/x
  3. Step 3: Cross multiply
    3,215.65x = 4,820.95 × 1,269.31
  4. Step 4: Simplify right side
    3,215.65x = 6,119,280.04
  5. Step 5: Solve for x
    x = 6,119,280.04/3,215.65
  6. Step 6: Final answer
    x = 1,902.97

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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.