Home / 3,653.19-5,478.62-1,187.42

Finding the Fourth Proportional to 3,653.19, 5,478.62 and 1,187.42

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Solution

The fourth proportional to 3,653.19, 5,478.62 and 1,187.42 is: 1,780.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,653.19 : 5,478.62 = 1,187.42 : x
  2. Step 2: Convert to fraction form
    3,653.19/5,478.62 = 1,187.42/x
  3. Step 3: Cross multiply
    3,653.19x = 5,478.62 × 1,187.42
  4. Step 4: Simplify right side
    3,653.19x = 6,505,389.63
  5. Step 5: Solve for x
    x = 6,505,389.63/3,653.19
  6. Step 6: Final answer
    x = 1,780.74

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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.