Home / 3,871.02-5,341.95-2,169.50

Finding the Fourth Proportional to 3,871.02, 5,341.95 and 2,169.50

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Solution

The fourth proportional to 3,871.02, 5,341.95 and 2,169.50 is: 2,993.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.02 : 5,341.95 = 2,169.50 : x
  2. Step 2: Convert to fraction form
    3,871.02/5,341.95 = 2,169.50/x
  3. Step 3: Cross multiply
    3,871.02x = 5,341.95 × 2,169.50
  4. Step 4: Simplify right side
    3,871.02x = 11,589,333.82
  5. Step 5: Solve for x
    x = 11,589,333.82/3,871.02
  6. Step 6: Final answer
    x = 2,993.87

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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.