Home / 3,929,681.79-5,422,960.06-2,187,313.61

Finding the Fourth Proportional to 3,929,681.79, 5,422,960.06 and 2,187,313.61

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Solution

The fourth proportional to 3,929,681.79, 5,422,960.06 and 2,187,313.61 is: 3,018,492.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929,681.79 : 5,422,960.06 = 2,187,313.61 : x
  2. Step 2: Convert to fraction form
    3,929,681.79/5,422,960.06 = 2,187,313.61/x
  3. Step 3: Cross multiply
    3,929,681.79x = 5,422,960.06 × 2,187,313.61
  4. Step 4: Simplify right side
    3,929,681.79x = 11,861,714,313,141.33
  5. Step 5: Solve for x
    x = 11,861,714,313,141.33/3,929,681.79
  6. Step 6: Final answer
    x = 3,018,492.32

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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.