Home / 3,129.01-4,318.96-1,803.65

Finding the Fourth Proportional to 3,129.01, 4,318.96 and 1,803.65

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Solution

The fourth proportional to 3,129.01, 4,318.96 and 1,803.65 is: 2,489.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.01 : 4,318.96 = 1,803.65 : x
  2. Step 2: Convert to fraction form
    3,129.01/4,318.96 = 1,803.65/x
  3. Step 3: Cross multiply
    3,129.01x = 4,318.96 × 1,803.65
  4. Step 4: Simplify right side
    3,129.01x = 7,789,866.10
  5. Step 5: Solve for x
    x = 7,789,866.10/3,129.01
  6. Step 6: Final answer
    x = 2,489.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.