Home / 3,187.92-4,774.20-1,886.16

Finding the Fourth Proportional to 3,187.92, 4,774.20 and 1,886.16

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Solution

The fourth proportional to 3,187.92, 4,774.20 and 1,886.16 is: 2,824.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.92 : 4,774.20 = 1,886.16 : x
  2. Step 2: Convert to fraction form
    3,187.92/4,774.20 = 1,886.16/x
  3. Step 3: Cross multiply
    3,187.92x = 4,774.20 × 1,886.16
  4. Step 4: Simplify right side
    3,187.92x = 9,004,905.07
  5. Step 5: Solve for x
    x = 9,004,905.07/3,187.92
  6. Step 6: Final answer
    x = 2,824.70

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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.