Home / 3,128.32-4,317.06-1,949.32

Finding the Fourth Proportional to 3,128.32, 4,317.06 and 1,949.32

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Solution

The fourth proportional to 3,128.32, 4,317.06 and 1,949.32 is: 2,690.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.32 : 4,317.06 = 1,949.32 : x
  2. Step 2: Convert to fraction form
    3,128.32/4,317.06 = 1,949.32/x
  3. Step 3: Cross multiply
    3,128.32x = 4,317.06 × 1,949.32
  4. Step 4: Simplify right side
    3,128.32x = 8,415,331.40
  5. Step 5: Solve for x
    x = 8,415,331.40/3,128.32
  6. Step 6: Final answer
    x = 2,690.05

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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.