Home / 5,109.53-7,051.12-2,840.85

Finding the Fourth Proportional to 5,109.53, 7,051.12 and 2,840.85

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Solution

The fourth proportional to 5,109.53, 7,051.12 and 2,840.85 is: 3,920.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.53 : 7,051.12 = 2,840.85 : x
  2. Step 2: Convert to fraction form
    5,109.53/7,051.12 = 2,840.85/x
  3. Step 3: Cross multiply
    5,109.53x = 7,051.12 × 2,840.85
  4. Step 4: Simplify right side
    5,109.53x = 20,031,174.25
  5. Step 5: Solve for x
    x = 20,031,174.25/5,109.53
  6. Step 6: Final answer
    x = 3,920.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.