Home / 5,620.36-8,430.24-1,724.78

Finding the Fourth Proportional to 5,620.36, 8,430.24 and 1,724.78

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Solution

The fourth proportional to 5,620.36, 8,430.24 and 1,724.78 is: 2,587.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,620.36 : 8,430.24 = 1,724.78 : x
  2. Step 2: Convert to fraction form
    5,620.36/8,430.24 = 1,724.78/x
  3. Step 3: Cross multiply
    5,620.36x = 8,430.24 × 1,724.78
  4. Step 4: Simplify right side
    5,620.36x = 14,540,309.35
  5. Step 5: Solve for x
    x = 14,540,309.35/5,620.36
  6. Step 6: Final answer
    x = 2,587.08

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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.