Home / 3,139.07-4,331.60-1,812.83

Finding the Fourth Proportional to 3,139.07, 4,331.60 and 1,812.83

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Solution

The fourth proportional to 3,139.07, 4,331.60 and 1,812.83 is: 2,501.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.07 : 4,331.60 = 1,812.83 : x
  2. Step 2: Convert to fraction form
    3,139.07/4,331.60 = 1,812.83/x
  3. Step 3: Cross multiply
    3,139.07x = 4,331.60 × 1,812.83
  4. Step 4: Simplify right side
    3,139.07x = 7,852,454.43
  5. Step 5: Solve for x
    x = 7,852,454.43/3,139.07
  6. Step 6: Final answer
    x = 2,501.52

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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.