Home / 3,388.08-4,674.84-1,990.32

Finding the Fourth Proportional to 3,388.08, 4,674.84 and 1,990.32

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Solution

The fourth proportional to 3,388.08, 4,674.84 and 1,990.32 is: 2,746.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,388.08 : 4,674.84 = 1,990.32 : x
  2. Step 2: Convert to fraction form
    3,388.08/4,674.84 = 1,990.32/x
  3. Step 3: Cross multiply
    3,388.08x = 4,674.84 × 1,990.32
  4. Step 4: Simplify right side
    3,388.08x = 9,304,427.55
  5. Step 5: Solve for x
    x = 9,304,427.55/3,388.08
  6. Step 6: Final answer
    x = 2,746.22

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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.