Home / 3,128,518.31-4,315,124.88-2,871,224.65

Finding the Fourth Proportional to 3,128,518.31, 4,315,124.88 and 2,871,224.65

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Solution

The fourth proportional to 3,128,518.31, 4,315,124.88 and 2,871,224.65 is: 3,960,243.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128,518.31 : 4,315,124.88 = 2,871,224.65 : x
  2. Step 2: Convert to fraction form
    3,128,518.31/4,315,124.88 = 2,871,224.65/x
  3. Step 3: Cross multiply
    3,128,518.31x = 4,315,124.88 × 2,871,224.65
  4. Step 4: Simplify right side
    3,128,518.31x = 12,389,692,901,708.67
  5. Step 5: Solve for x
    x = 12,389,692,901,708.67/3,128,518.31
  6. Step 6: Final answer
    x = 3,960,243.05

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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.