Home / 7,421.64-11,134.56-3,719.40

Finding the Fourth Proportional to 7,421.64, 11,134.56 and 3,719.40

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Solution

The fourth proportional to 7,421.64, 11,134.56 and 3,719.40 is: 5,580.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.64 : 11,134.56 = 3,719.40 : x
  2. Step 2: Convert to fraction form
    7,421.64/11,134.56 = 3,719.40/x
  3. Step 3: Cross multiply
    7,421.64x = 11,134.56 × 3,719.40
  4. Step 4: Simplify right side
    7,421.64x = 41,413,882.46
  5. Step 5: Solve for x
    x = 41,413,882.46/7,421.64
  6. Step 6: Final answer
    x = 5,580.15

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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.