Home / 7,442.79-11,154.52-5,681.31

Finding the Fourth Proportional to 7,442.79, 11,154.52 and 5,681.31

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Solution

The fourth proportional to 7,442.79, 11,154.52 and 5,681.31 is: 8,514.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,442.79 : 11,154.52 = 5,681.31 : x
  2. Step 2: Convert to fraction form
    7,442.79/11,154.52 = 5,681.31/x
  3. Step 3: Cross multiply
    7,442.79x = 11,154.52 × 5,681.31
  4. Step 4: Simplify right side
    7,442.79x = 63,372,286.02
  5. Step 5: Solve for x
    x = 63,372,286.02/7,442.79
  6. Step 6: Final answer
    x = 8,514.59

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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.