Home / 2,385.33-3,291.86-1,489.60

Finding the Fourth Proportional to 2,385.33, 3,291.86 and 1,489.60

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Solution

The fourth proportional to 2,385.33, 3,291.86 and 1,489.60 is: 2,055.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,385.33 : 3,291.86 = 1,489.60 : x
  2. Step 2: Convert to fraction form
    2,385.33/3,291.86 = 1,489.60/x
  3. Step 3: Cross multiply
    2,385.33x = 3,291.86 × 1,489.60
  4. Step 4: Simplify right side
    2,385.33x = 4,903,554.66
  5. Step 5: Solve for x
    x = 4,903,554.66/2,385.33
  6. Step 6: Final answer
    x = 2,055.71

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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.