Home / 3,181.68-4,390.59-1,765.35

Finding the Fourth Proportional to 3,181.68, 4,390.59 and 1,765.35

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Solution

The fourth proportional to 3,181.68, 4,390.59 and 1,765.35 is: 2,436.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.68 : 4,390.59 = 1,765.35 : x
  2. Step 2: Convert to fraction form
    3,181.68/4,390.59 = 1,765.35/x
  3. Step 3: Cross multiply
    3,181.68x = 4,390.59 × 1,765.35
  4. Step 4: Simplify right side
    3,181.68x = 7,750,928.06
  5. Step 5: Solve for x
    x = 7,750,928.06/3,181.68
  6. Step 6: Final answer
    x = 2,436.11

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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.