Home / 5,130.39-7,083.73-3,143.66

Finding the Fourth Proportional to 5,130.39, 7,083.73 and 3,143.66

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Solution

The fourth proportional to 5,130.39, 7,083.73 and 3,143.66 is: 4,340.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.39 : 7,083.73 = 3,143.66 : x
  2. Step 2: Convert to fraction form
    5,130.39/7,083.73 = 3,143.66/x
  3. Step 3: Cross multiply
    5,130.39x = 7,083.73 × 3,143.66
  4. Step 4: Simplify right side
    5,130.39x = 22,268,838.65
  5. Step 5: Solve for x
    x = 22,268,838.65/5,130.39
  6. Step 6: Final answer
    x = 4,340.57

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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.