Home / 2,421.52-3,631.81-666.07

Finding the Fourth Proportional to 2,421.52, 3,631.81 and 666.07

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Solution

The fourth proportional to 2,421.52, 3,631.81 and 666.07 is: 998.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.52 : 3,631.81 = 666.07 : x
  2. Step 2: Convert to fraction form
    2,421.52/3,631.81 = 666.07/x
  3. Step 3: Cross multiply
    2,421.52x = 3,631.81 × 666.07
  4. Step 4: Simplify right side
    2,421.52x = 2,419,036.36
  5. Step 5: Solve for x
    x = 2,419,036.36/2,421.52
  6. Step 6: Final answer
    x = 998.98

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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.