Home / 5,161.20-7,742.88-1,698

Finding the Fourth Proportional to 5,161.20, 7,742.88 and 1,698

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Solution

The fourth proportional to 5,161.20, 7,742.88 and 1,698 is: 2,547.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.20 : 7,742.88 = 1,698 : x
  2. Step 2: Convert to fraction form
    5,161.20/7,742.88 = 1,698/x
  3. Step 3: Cross multiply
    5,161.20x = 7,742.88 × 1,698
  4. Step 4: Simplify right side
    5,161.20x = 13,147,410.24
  5. Step 5: Solve for x
    x = 13,147,410.24/5,161.20
  6. Step 6: Final answer
    x = 2,547.36

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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.