Home / 7,771.10-11,643.69-5,458.46

Finding the Fourth Proportional to 7,771.10, 11,643.69 and 5,458.46

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Solution

The fourth proportional to 7,771.10, 11,643.69 and 5,458.46 is: 8,178.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,771.10 : 11,643.69 = 5,458.46 : x
  2. Step 2: Convert to fraction form
    7,771.10/11,643.69 = 5,458.46/x
  3. Step 3: Cross multiply
    7,771.10x = 11,643.69 × 5,458.46
  4. Step 4: Simplify right side
    7,771.10x = 63,556,616.12
  5. Step 5: Solve for x
    x = 63,556,616.12/7,771.10
  6. Step 6: Final answer
    x = 8,178.59

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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.