Home / 5,718.18-7,908.48-5,128.50

Finding the Fourth Proportional to 5,718.18, 7,908.48 and 5,128.50

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Solution

The fourth proportional to 5,718.18, 7,908.48 and 5,128.50 is: 7,092.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.18 : 7,908.48 = 5,128.50 : x
  2. Step 2: Convert to fraction form
    5,718.18/7,908.48 = 5,128.50/x
  3. Step 3: Cross multiply
    5,718.18x = 7,908.48 × 5,128.50
  4. Step 4: Simplify right side
    5,718.18x = 40,558,639.68
  5. Step 5: Solve for x
    x = 40,558,639.68/5,718.18
  6. Step 6: Final answer
    x = 7,092.93

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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.