Home / 3,565.40-4,920.21-1,993.49

Finding the Fourth Proportional to 3,565.40, 4,920.21 and 1,993.49

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Solution

The fourth proportional to 3,565.40, 4,920.21 and 1,993.49 is: 2,750.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,565.40 : 4,920.21 = 1,993.49 : x
  2. Step 2: Convert to fraction form
    3,565.40/4,920.21 = 1,993.49/x
  3. Step 3: Cross multiply
    3,565.40x = 4,920.21 × 1,993.49
  4. Step 4: Simplify right side
    3,565.40x = 9,808,383.28
  5. Step 5: Solve for x
    x = 9,808,383.28/3,565.40
  6. Step 6: Final answer
    x = 2,750.99

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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.