Home / 3,139.42-4,338.14-2,287.19

Finding the Fourth Proportional to 3,139.42, 4,338.14 and 2,287.19

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Solution

The fourth proportional to 3,139.42, 4,338.14 and 2,287.19 is: 3,160.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.42 : 4,338.14 = 2,287.19 : x
  2. Step 2: Convert to fraction form
    3,139.42/4,338.14 = 2,287.19/x
  3. Step 3: Cross multiply
    3,139.42x = 4,338.14 × 2,287.19
  4. Step 4: Simplify right side
    3,139.42x = 9,922,150.43
  5. Step 5: Solve for x
    x = 9,922,150.43/3,139.42
  6. Step 6: Final answer
    x = 3,160.50

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Half scale
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Double scale
Find fourth proportional to 3,140.42, 4,339.52 and 2,288.19
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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.