Home / 5,109.12-7,048.92-3,012.84

Finding the Fourth Proportional to 5,109.12, 7,048.92 and 3,012.84

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Solution

The fourth proportional to 5,109.12, 7,048.92 and 3,012.84 is: 4,156.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.12 : 7,048.92 = 3,012.84 : x
  2. Step 2: Convert to fraction form
    5,109.12/7,048.92 = 3,012.84/x
  3. Step 3: Cross multiply
    5,109.12x = 7,048.92 × 3,012.84
  4. Step 4: Simplify right side
    5,109.12x = 21,237,268.13
  5. Step 5: Solve for x
    x = 21,237,268.13/5,109.12
  6. Step 6: Final answer
    x = 4,156.74

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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.