Home / 5,191.28-7,160.76-3,699.68

Finding the Fourth Proportional to 5,191.28, 7,160.76 and 3,699.68

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Solution

The fourth proportional to 5,191.28, 7,160.76 and 3,699.68 is: 5,103.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,191.28 : 7,160.76 = 3,699.68 : x
  2. Step 2: Convert to fraction form
    5,191.28/7,160.76 = 3,699.68/x
  3. Step 3: Cross multiply
    5,191.28x = 7,160.76 × 3,699.68
  4. Step 4: Simplify right side
    5,191.28x = 26,492,484.75
  5. Step 5: Solve for x
    x = 26,492,484.75/5,191.28
  6. Step 6: Final answer
    x = 5,103.27

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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.