Home / 3,139.02-4,331.37-1,812.48

Finding the Fourth Proportional to 3,139.02, 4,331.37 and 1,812.48

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Solution

The fourth proportional to 3,139.02, 4,331.37 and 1,812.48 is: 2,500.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.02 : 4,331.37 = 1,812.48 : x
  2. Step 2: Convert to fraction form
    3,139.02/4,331.37 = 1,812.48/x
  3. Step 3: Cross multiply
    3,139.02x = 4,331.37 × 1,812.48
  4. Step 4: Simplify right side
    3,139.02x = 7,850,521.50
  5. Step 5: Solve for x
    x = 7,850,521.50/3,139.02
  6. Step 6: Final answer
    x = 2,500.95

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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.