Home / 3,291.30-4,935.20-1,210.75

Finding the Fourth Proportional to 3,291.30, 4,935.20 and 1,210.75

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Solution

The fourth proportional to 3,291.30, 4,935.20 and 1,210.75 is: 1,815.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291.30 : 4,935.20 = 1,210.75 : x
  2. Step 2: Convert to fraction form
    3,291.30/4,935.20 = 1,210.75/x
  3. Step 3: Cross multiply
    3,291.30x = 4,935.20 × 1,210.75
  4. Step 4: Simplify right side
    3,291.30x = 5,975,275.01
  5. Step 5: Solve for x
    x = 5,975,275.01/3,291.30
  6. Step 6: Final answer
    x = 1,815.48

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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.