Home / 7,089.48-10,620.38-5,211.91

Finding the Fourth Proportional to 7,089.48, 10,620.38 and 5,211.91

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Solution

The fourth proportional to 7,089.48, 10,620.38 and 5,211.91 is: 7,807.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,089.48 : 10,620.38 = 5,211.91 : x
  2. Step 2: Convert to fraction form
    7,089.48/10,620.38 = 5,211.91/x
  3. Step 3: Cross multiply
    7,089.48x = 10,620.38 × 5,211.91
  4. Step 4: Simplify right side
    7,089.48x = 55,352,412.12
  5. Step 5: Solve for x
    x = 55,352,412.12/7,089.48
  6. Step 6: Final answer
    x = 7,807.68

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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.