Home / 8,055.20-12,093.60-5,139.20

Finding the Fourth Proportional to 8,055.20, 12,093.60 and 5,139.20

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Solution

The fourth proportional to 8,055.20, 12,093.60 and 5,139.20 is: 7,715.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,055.20 : 12,093.60 = 5,139.20 : x
  2. Step 2: Convert to fraction form
    8,055.20/12,093.60 = 5,139.20/x
  3. Step 3: Cross multiply
    8,055.20x = 12,093.60 × 5,139.20
  4. Step 4: Simplify right side
    8,055.20x = 62,151,429.12
  5. Step 5: Solve for x
    x = 62,151,429.12/8,055.20
  6. Step 6: Final answer
    x = 7,715.69

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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.