Home / 4,321.10-6,480.29-1,398.80

Finding the Fourth Proportional to 4,321.10, 6,480.29 and 1,398.80

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Solution

The fourth proportional to 4,321.10, 6,480.29 and 1,398.80 is: 2,097.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,321.10 : 6,480.29 = 1,398.80 : x
  2. Step 2: Convert to fraction form
    4,321.10/6,480.29 = 1,398.80/x
  3. Step 3: Cross multiply
    4,321.10x = 6,480.29 × 1,398.80
  4. Step 4: Simplify right side
    4,321.10x = 9,064,629.65
  5. Step 5: Solve for x
    x = 9,064,629.65/4,321.10
  6. Step 6: Final answer
    x = 2,097.76

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1.5x scale

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.