Home / 2,189.30-3,015.24-2,148.80

Finding the Fourth Proportional to 2,189.30, 3,015.24 and 2,148.80

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Solution

The fourth proportional to 2,189.30, 3,015.24 and 2,148.80 is: 2,959.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.30 : 3,015.24 = 2,148.80 : x
  2. Step 2: Convert to fraction form
    2,189.30/3,015.24 = 2,148.80/x
  3. Step 3: Cross multiply
    2,189.30x = 3,015.24 × 2,148.80
  4. Step 4: Simplify right side
    2,189.30x = 6,479,147.71
  5. Step 5: Solve for x
    x = 6,479,147.71/2,189.30
  6. Step 6: Final answer
    x = 2,959.46

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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.