Home / 8,120.72-12,159.32-5,650.32

Finding the Fourth Proportional to 8,120.72, 12,159.32 and 5,650.32

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Solution

The fourth proportional to 8,120.72, 12,159.32 and 5,650.32 is: 8,460.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.72 : 12,159.32 = 5,650.32 : x
  2. Step 2: Convert to fraction form
    8,120.72/12,159.32 = 5,650.32/x
  3. Step 3: Cross multiply
    8,120.72x = 12,159.32 × 5,650.32
  4. Step 4: Simplify right side
    8,120.72x = 68,704,048.98
  5. Step 5: Solve for x
    x = 68,704,048.98/8,120.72
  6. Step 6: Final answer
    x = 8,460.34

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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.