Home / 3,138,794.15-4,332,852.20-2,121,576.71

Finding the Fourth Proportional to 3,138,794.15, 4,332,852.20 and 2,121,576.71

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Solution

The fourth proportional to 3,138,794.15, 4,332,852.20 and 2,121,576.71 is: 2,928,665.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138,794.15 : 4,332,852.20 = 2,121,576.71 : x
  2. Step 2: Convert to fraction form
    3,138,794.15/4,332,852.20 = 2,121,576.71/x
  3. Step 3: Cross multiply
    3,138,794.15x = 4,332,852.20 × 2,121,576.71
  4. Step 4: Simplify right side
    3,138,794.15x = 9,192,478,299,031.94
  5. Step 5: Solve for x
    x = 9,192,478,299,031.94/3,138,794.15
  6. Step 6: Final answer
    x = 2,928,665.56

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.