Home / 8,015.15-12,028.80-5,240.90

Finding the Fourth Proportional to 8,015.15, 12,028.80 and 5,240.90

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Solution

The fourth proportional to 8,015.15, 12,028.80 and 5,240.90 is: 7,865.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,015.15 : 12,028.80 = 5,240.90 : x
  2. Step 2: Convert to fraction form
    8,015.15/12,028.80 = 5,240.90/x
  3. Step 3: Cross multiply
    8,015.15x = 12,028.80 × 5,240.90
  4. Step 4: Simplify right side
    8,015.15x = 63,041,737.92
  5. Step 5: Solve for x
    x = 63,041,737.92/8,015.15
  6. Step 6: Final answer
    x = 7,865.32

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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.