Home / 8,559.20-12,840.60-3,631.16

Finding the Fourth Proportional to 8,559.20, 12,840.60 and 3,631.16

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Solution

The fourth proportional to 8,559.20, 12,840.60 and 3,631.16 is: 5,447.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,559.20 : 12,840.60 = 3,631.16 : x
  2. Step 2: Convert to fraction form
    8,559.20/12,840.60 = 3,631.16/x
  3. Step 3: Cross multiply
    8,559.20x = 12,840.60 × 3,631.16
  4. Step 4: Simplify right side
    8,559.20x = 46,626,273.10
  5. Step 5: Solve for x
    x = 46,626,273.10/8,559.20
  6. Step 6: Final answer
    x = 5,447.50

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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.