Home / 8,114.96-12,165.40-5,155.60

Finding the Fourth Proportional to 8,114.96, 12,165.40 and 5,155.60

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Solution

The fourth proportional to 8,114.96, 12,165.40 and 5,155.60 is: 7,728.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,114.96 : 12,165.40 = 5,155.60 : x
  2. Step 2: Convert to fraction form
    8,114.96/12,165.40 = 5,155.60/x
  3. Step 3: Cross multiply
    8,114.96x = 12,165.40 × 5,155.60
  4. Step 4: Simplify right side
    8,114.96x = 62,719,936.24
  5. Step 5: Solve for x
    x = 62,719,936.24/8,114.96
  6. Step 6: Final answer
    x = 7,728.93

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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.