Home / 5,420.01-8,129.97-2,788.25

Finding the Fourth Proportional to 5,420.01, 8,129.97 and 2,788.25

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Solution

The fourth proportional to 5,420.01, 8,129.97 and 2,788.25 is: 4,182.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.01 : 8,129.97 = 2,788.25 : x
  2. Step 2: Convert to fraction form
    5,420.01/8,129.97 = 2,788.25/x
  3. Step 3: Cross multiply
    5,420.01x = 8,129.97 × 2,788.25
  4. Step 4: Simplify right side
    5,420.01x = 22,668,388.85
  5. Step 5: Solve for x
    x = 22,668,388.85/5,420.01
  6. Step 6: Final answer
    x = 4,182.35

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1.5x scale

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.