Home / 2,986.56-4,478.80-1,231.06

Finding the Fourth Proportional to 2,986.56, 4,478.80 and 1,231.06

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Solution

The fourth proportional to 2,986.56, 4,478.80 and 1,231.06 is: 1,846.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.56 : 4,478.80 = 1,231.06 : x
  2. Step 2: Convert to fraction form
    2,986.56/4,478.80 = 1,231.06/x
  3. Step 3: Cross multiply
    2,986.56x = 4,478.80 × 1,231.06
  4. Step 4: Simplify right side
    2,986.56x = 5,513,671.53
  5. Step 5: Solve for x
    x = 5,513,671.53/2,986.56
  6. Step 6: Final answer
    x = 1,846.16

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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.