Home / 2,480.14-3,421.29-1,889.65

Finding the Fourth Proportional to 2,480.14, 3,421.29 and 1,889.65

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Solution

The fourth proportional to 2,480.14, 3,421.29 and 1,889.65 is: 2,606.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,480.14 : 3,421.29 = 1,889.65 : x
  2. Step 2: Convert to fraction form
    2,480.14/3,421.29 = 1,889.65/x
  3. Step 3: Cross multiply
    2,480.14x = 3,421.29 × 1,889.65
  4. Step 4: Simplify right side
    2,480.14x = 6,465,040.65
  5. Step 5: Solve for x
    x = 6,465,040.65/2,480.14
  6. Step 6: Final answer
    x = 2,606.72

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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.