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Finding the Fourth Proportional to 5,720.60, 8,580.90 and 2,804.60

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Solution

The fourth proportional to 5,720.60, 8,580.90 and 2,804.60 is: 4,206.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,720.60 : 8,580.90 = 2,804.60 : x
  2. Step 2: Convert to fraction form
    5,720.60/8,580.90 = 2,804.60/x
  3. Step 3: Cross multiply
    5,720.60x = 8,580.90 × 2,804.60
  4. Step 4: Simplify right side
    5,720.60x = 24,065,992.14
  5. Step 5: Solve for x
    x = 24,065,992.14/5,720.60
  6. Step 6: Final answer
    x = 4,206.90

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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.