Home / 5,119.60-7,061.76-3,129.04

Finding the Fourth Proportional to 5,119.60, 7,061.76 and 3,129.04

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Solution

The fourth proportional to 5,119.60, 7,061.76 and 3,129.04 is: 4,316.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.60 : 7,061.76 = 3,129.04 : x
  2. Step 2: Convert to fraction form
    5,119.60/7,061.76 = 3,129.04/x
  3. Step 3: Cross multiply
    5,119.60x = 7,061.76 × 3,129.04
  4. Step 4: Simplify right side
    5,119.60x = 22,096,529.51
  5. Step 5: Solve for x
    x = 22,096,529.51/5,119.60
  6. Step 6: Final answer
    x = 4,316.07

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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.