Home / 3,652.45-5,478.87-1,187.35

Finding the Fourth Proportional to 3,652.45, 5,478.87 and 1,187.35

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Solution

The fourth proportional to 3,652.45, 5,478.87 and 1,187.35 is: 1,781.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,652.45 : 5,478.87 = 1,187.35 : x
  2. Step 2: Convert to fraction form
    3,652.45/5,478.87 = 1,187.35/x
  3. Step 3: Cross multiply
    3,652.45x = 5,478.87 × 1,187.35
  4. Step 4: Simplify right side
    3,652.45x = 6,505,336.29
  5. Step 5: Solve for x
    x = 6,505,336.29/3,652.45
  6. Step 6: Final answer
    x = 1,781.09

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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.