Home / 5,109.13-7,047.75-3,515.59

Finding the Fourth Proportional to 5,109.13, 7,047.75 and 3,515.59

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Solution

The fourth proportional to 5,109.13, 7,047.75 and 3,515.59 is: 4,849.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.13 : 7,047.75 = 3,515.59 : x
  2. Step 2: Convert to fraction form
    5,109.13/7,047.75 = 3,515.59/x
  3. Step 3: Cross multiply
    5,109.13x = 7,047.75 × 3,515.59
  4. Step 4: Simplify right side
    5,109.13x = 24,776,999.42
  5. Step 5: Solve for x
    x = 24,776,999.42/5,109.13
  6. Step 6: Final answer
    x = 4,849.55

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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.