Home / 3,191.28-4,785.64-1,547.36

Finding the Fourth Proportional to 3,191.28, 4,785.64 and 1,547.36

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Solution

The fourth proportional to 3,191.28, 4,785.64 and 1,547.36 is: 2,320.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.28 : 4,785.64 = 1,547.36 : x
  2. Step 2: Convert to fraction form
    3,191.28/4,785.64 = 1,547.36/x
  3. Step 3: Cross multiply
    3,191.28x = 4,785.64 × 1,547.36
  4. Step 4: Simplify right side
    3,191.28x = 7,405,107.91
  5. Step 5: Solve for x
    x = 7,405,107.91/3,191.28
  6. Step 6: Final answer
    x = 2,320.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.