Home / 5,119.10-7,063.10-3,128.93

Finding the Fourth Proportional to 5,119.10, 7,063.10 and 3,128.93

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Solution

The fourth proportional to 5,119.10, 7,063.10 and 3,128.93 is: 4,317.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.10 : 7,063.10 = 3,128.93 : x
  2. Step 2: Convert to fraction form
    5,119.10/7,063.10 = 3,128.93/x
  3. Step 3: Cross multiply
    5,119.10x = 7,063.10 × 3,128.93
  4. Step 4: Simplify right side
    5,119.10x = 22,099,932.74
  5. Step 5: Solve for x
    x = 22,099,932.74/5,119.10
  6. Step 6: Final answer
    x = 4,317.15

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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.