Home / 3,187.90-4,398.58-1,928.93

Finding the Fourth Proportional to 3,187.90, 4,398.58 and 1,928.93

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Solution

The fourth proportional to 3,187.90, 4,398.58 and 1,928.93 is: 2,661.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.90 : 4,398.58 = 1,928.93 : x
  2. Step 2: Convert to fraction form
    3,187.90/4,398.58 = 1,928.93/x
  3. Step 3: Cross multiply
    3,187.90x = 4,398.58 × 1,928.93
  4. Step 4: Simplify right side
    3,187.90x = 8,484,530.93
  5. Step 5: Solve for x
    x = 8,484,530.93/3,187.90
  6. Step 6: Final answer
    x = 2,661.48

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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.