Home / 3,653.30-5,478.60-1,188.20

Finding the Fourth Proportional to 3,653.30, 5,478.60 and 1,188.20

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Solution

The fourth proportional to 3,653.30, 5,478.60 and 1,188.20 is: 1,781.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,653.30 : 5,478.60 = 1,188.20 : x
  2. Step 2: Convert to fraction form
    3,653.30/5,478.60 = 1,188.20/x
  3. Step 3: Cross multiply
    3,653.30x = 5,478.60 × 1,188.20
  4. Step 4: Simplify right side
    3,653.30x = 6,509,672.52
  5. Step 5: Solve for x
    x = 6,509,672.52/3,653.30
  6. Step 6: Final answer
    x = 1,781.86

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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.