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Finding the Fourth Proportional to 5,718.87, 7,895.61 and 4,389.93

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Solution

The fourth proportional to 5,718.87, 7,895.61 and 4,389.93 is: 6,060.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.87 : 7,895.61 = 4,389.93 : x
  2. Step 2: Convert to fraction form
    5,718.87/7,895.61 = 4,389.93/x
  3. Step 3: Cross multiply
    5,718.87x = 7,895.61 × 4,389.93
  4. Step 4: Simplify right side
    5,718.87x = 34,661,175.21
  5. Step 5: Solve for x
    x = 34,661,175.21/5,718.87
  6. Step 6: Final answer
    x = 6,060.84

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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.