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Finding the Fourth Proportional to 5,719.61, 7,875.53 and 5,007.47

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Solution

The fourth proportional to 5,719.61, 7,875.53 and 5,007.47 is: 6,894.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,719.61 : 7,875.53 = 5,007.47 : x
  2. Step 2: Convert to fraction form
    5,719.61/7,875.53 = 5,007.47/x
  3. Step 3: Cross multiply
    5,719.61x = 7,875.53 × 5,007.47
  4. Step 4: Simplify right side
    5,719.61x = 39,436,478.87
  5. Step 5: Solve for x
    x = 39,436,478.87/5,719.61
  6. Step 6: Final answer
    x = 6,894.96

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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.