Home / 5,109.77-7,051.26-2,985.50

Finding the Fourth Proportional to 5,109.77, 7,051.26 and 2,985.50

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Solution

The fourth proportional to 5,109.77, 7,051.26 and 2,985.50 is: 4,119.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.77 : 7,051.26 = 2,985.50 : x
  2. Step 2: Convert to fraction form
    5,109.77/7,051.26 = 2,985.50/x
  3. Step 3: Cross multiply
    5,109.77x = 7,051.26 × 2,985.50
  4. Step 4: Simplify right side
    5,109.77x = 21,051,500.70
  5. Step 5: Solve for x
    x = 21,051,500.70/5,109.77
  6. Step 6: Final answer
    x = 4,119.85

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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.