Home / 3,128.24-4,315.63-1,801.66

Finding the Fourth Proportional to 3,128.24, 4,315.63 and 1,801.66

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Solution

The fourth proportional to 3,128.24, 4,315.63 and 1,801.66 is: 2,485.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.24 : 4,315.63 = 1,801.66 : x
  2. Step 2: Convert to fraction form
    3,128.24/4,315.63 = 1,801.66/x
  3. Step 3: Cross multiply
    3,128.24x = 4,315.63 × 1,801.66
  4. Step 4: Simplify right side
    3,128.24x = 7,775,282.65
  5. Step 5: Solve for x
    x = 7,775,282.65/3,128.24
  6. Step 6: Final answer
    x = 2,485.52

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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.