Home / 8,417.57-12,612.39-5,120.69

Finding the Fourth Proportional to 8,417.57, 12,612.39 and 5,120.69

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Solution

The fourth proportional to 8,417.57, 12,612.39 and 5,120.69 is: 7,672.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,417.57 : 12,612.39 = 5,120.69 : x
  2. Step 2: Convert to fraction form
    8,417.57/12,612.39 = 5,120.69/x
  3. Step 3: Cross multiply
    8,417.57x = 12,612.39 × 5,120.69
  4. Step 4: Simplify right side
    8,417.57x = 64,584,076.29
  5. Step 5: Solve for x
    x = 64,584,076.29/8,417.57
  6. Step 6: Final answer
    x = 7,672.54

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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.