Home / 3,873.36-5,343.84-2,547.78

Finding the Fourth Proportional to 3,873.36, 5,343.84 and 2,547.78

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Solution

The fourth proportional to 3,873.36, 5,343.84 and 2,547.78 is: 3,515.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873.36 : 5,343.84 = 2,547.78 : x
  2. Step 2: Convert to fraction form
    3,873.36/5,343.84 = 2,547.78/x
  3. Step 3: Cross multiply
    3,873.36x = 5,343.84 × 2,547.78
  4. Step 4: Simplify right side
    3,873.36x = 13,614,928.68
  5. Step 5: Solve for x
    x = 13,614,928.68/3,873.36
  6. Step 6: Final answer
    x = 3,515.02

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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.