Home / 6,390.50-9,565.19-3,421.51

Finding the Fourth Proportional to 6,390.50, 9,565.19 and 3,421.51

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Solution

The fourth proportional to 6,390.50, 9,565.19 and 3,421.51 is: 5,121.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,390.50 : 9,565.19 = 3,421.51 : x
  2. Step 2: Convert to fraction form
    6,390.50/9,565.19 = 3,421.51/x
  3. Step 3: Cross multiply
    6,390.50x = 9,565.19 × 3,421.51
  4. Step 4: Simplify right side
    6,390.50x = 32,727,365.05
  5. Step 5: Solve for x
    x = 32,727,365.05/6,390.50
  6. Step 6: Final answer
    x = 5,121.26

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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.