Home / 5,320.35-7,979.88-1,425.06

Finding the Fourth Proportional to 5,320.35, 7,979.88 and 1,425.06

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Solution

The fourth proportional to 5,320.35, 7,979.88 and 1,425.06 is: 2,137.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.35 : 7,979.88 = 1,425.06 : x
  2. Step 2: Convert to fraction form
    5,320.35/7,979.88 = 1,425.06/x
  3. Step 3: Cross multiply
    5,320.35x = 7,979.88 × 1,425.06
  4. Step 4: Simplify right side
    5,320.35x = 11,371,807.79
  5. Step 5: Solve for x
    x = 11,371,807.79/5,320.35
  6. Step 6: Final answer
    x = 2,137.42

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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.