Home / 5,138.91-7,707.51-1,440.27

Finding the Fourth Proportional to 5,138.91, 7,707.51 and 1,440.27

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Solution

The fourth proportional to 5,138.91, 7,707.51 and 1,440.27 is: 2,160.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.91 : 7,707.51 = 1,440.27 : x
  2. Step 2: Convert to fraction form
    5,138.91/7,707.51 = 1,440.27/x
  3. Step 3: Cross multiply
    5,138.91x = 7,707.51 × 1,440.27
  4. Step 4: Simplify right side
    5,138.91x = 11,100,895.43
  5. Step 5: Solve for x
    x = 11,100,895.43/5,138.91
  6. Step 6: Final answer
    x = 2,160.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.