Home / 2,189.60-3,281.68-1,927.16

Finding the Fourth Proportional to 2,189.60, 3,281.68 and 1,927.16

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Solution

The fourth proportional to 2,189.60, 3,281.68 and 1,927.16 is: 2,888.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.60 : 3,281.68 = 1,927.16 : x
  2. Step 2: Convert to fraction form
    2,189.60/3,281.68 = 1,927.16/x
  3. Step 3: Cross multiply
    2,189.60x = 3,281.68 × 1,927.16
  4. Step 4: Simplify right side
    2,189.60x = 6,324,322.43
  5. Step 5: Solve for x
    x = 6,324,322.43/2,189.60
  6. Step 6: Final answer
    x = 2,888.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.