Home / 3,390.32-4,678.08-1,993.34

Finding the Fourth Proportional to 3,390.32, 4,678.08 and 1,993.34

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Solution

The fourth proportional to 3,390.32, 4,678.08 and 1,993.34 is: 2,750.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.32 : 4,678.08 = 1,993.34 : x
  2. Step 2: Convert to fraction form
    3,390.32/4,678.08 = 1,993.34/x
  3. Step 3: Cross multiply
    3,390.32x = 4,678.08 × 1,993.34
  4. Step 4: Simplify right side
    3,390.32x = 9,325,003.99
  5. Step 5: Solve for x
    x = 9,325,003.99/3,390.32
  6. Step 6: Final answer
    x = 2,750.48

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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.