Home / 3,652.40-5,478.60-1,187.30

Finding the Fourth Proportional to 3,652.40, 5,478.60 and 1,187.30

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Solution

The fourth proportional to 3,652.40, 5,478.60 and 1,187.30 is: 1,780.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,652.40 : 5,478.60 = 1,187.30 : x
  2. Step 2: Convert to fraction form
    3,652.40/5,478.60 = 1,187.30/x
  3. Step 3: Cross multiply
    3,652.40x = 5,478.60 × 1,187.30
  4. Step 4: Simplify right side
    3,652.40x = 6,504,741.78
  5. Step 5: Solve for x
    x = 6,504,741.78/3,652.40
  6. Step 6: Final answer
    x = 1,780.95

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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.