Home / 3,181.96-4,390.05-1,923.40

Finding the Fourth Proportional to 3,181.96, 4,390.05 and 1,923.40

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Solution

The fourth proportional to 3,181.96, 4,390.05 and 1,923.40 is: 2,653.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.96 : 4,390.05 = 1,923.40 : x
  2. Step 2: Convert to fraction form
    3,181.96/4,390.05 = 1,923.40/x
  3. Step 3: Cross multiply
    3,181.96x = 4,390.05 × 1,923.40
  4. Step 4: Simplify right side
    3,181.96x = 8,443,822.17
  5. Step 5: Solve for x
    x = 8,443,822.17/3,181.96
  6. Step 6: Final answer
    x = 2,653.65

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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.