Home / 3,720.11-5,580.91-1,087.62

Finding the Fourth Proportional to 3,720.11, 5,580.91 and 1,087.62

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Solution

The fourth proportional to 3,720.11, 5,580.91 and 1,087.62 is: 1,631.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.11 : 5,580.91 = 1,087.62 : x
  2. Step 2: Convert to fraction form
    3,720.11/5,580.91 = 1,087.62/x
  3. Step 3: Cross multiply
    3,720.11x = 5,580.91 × 1,087.62
  4. Step 4: Simplify right side
    3,720.11x = 6,069,903.90
  5. Step 5: Solve for x
    x = 6,069,903.90/3,720.11
  6. Step 6: Final answer
    x = 1,631.65

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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.