Home / 5,160.47-7,740.34-2,389.36

Finding the Fourth Proportional to 5,160.47, 7,740.34 and 2,389.36

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Solution

The fourth proportional to 5,160.47, 7,740.34 and 2,389.36 is: 3,583.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.47 : 7,740.34 = 2,389.36 : x
  2. Step 2: Convert to fraction form
    5,160.47/7,740.34 = 2,389.36/x
  3. Step 3: Cross multiply
    5,160.47x = 7,740.34 × 2,389.36
  4. Step 4: Simplify right side
    5,160.47x = 18,494,458.78
  5. Step 5: Solve for x
    x = 18,494,458.78/5,160.47
  6. Step 6: Final answer
    x = 3,583.87

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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.