Home / 5,145.41-7,095.75-3,129.17

Finding the Fourth Proportional to 5,145.41, 7,095.75 and 3,129.17

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Solution

The fourth proportional to 5,145.41, 7,095.75 and 3,129.17 is: 4,315.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.41 : 7,095.75 = 3,129.17 : x
  2. Step 2: Convert to fraction form
    5,145.41/7,095.75 = 3,129.17/x
  3. Step 3: Cross multiply
    5,145.41x = 7,095.75 × 3,129.17
  4. Step 4: Simplify right side
    5,145.41x = 22,203,772.55
  5. Step 5: Solve for x
    x = 22,203,772.55/5,145.41
  6. Step 6: Final answer
    x = 4,315.26

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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.