Home / 4,919.81-6,789.32-2,681.71

Finding the Fourth Proportional to 4,919.81, 6,789.32 and 2,681.71

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Solution

The fourth proportional to 4,919.81, 6,789.32 and 2,681.71 is: 3,700.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,919.81 : 6,789.32 = 2,681.71 : x
  2. Step 2: Convert to fraction form
    4,919.81/6,789.32 = 2,681.71/x
  3. Step 3: Cross multiply
    4,919.81x = 6,789.32 × 2,681.71
  4. Step 4: Simplify right side
    4,919.81x = 18,206,987.34
  5. Step 5: Solve for x
    x = 18,206,987.34/4,919.81
  6. Step 6: Final answer
    x = 3,700.75

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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.