Home / 3,120.08-4,303.56-2,290.64

Finding the Fourth Proportional to 3,120.08, 4,303.56 and 2,290.64

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Solution

The fourth proportional to 3,120.08, 4,303.56 and 2,290.64 is: 3,159.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.08 : 4,303.56 = 2,290.64 : x
  2. Step 2: Convert to fraction form
    3,120.08/4,303.56 = 2,290.64/x
  3. Step 3: Cross multiply
    3,120.08x = 4,303.56 × 2,290.64
  4. Step 4: Simplify right side
    3,120.08x = 9,857,906.68
  5. Step 5: Solve for x
    x = 9,857,906.68/3,120.08
  6. Step 6: Final answer
    x = 3,159.50

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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.