Home / 5,384.31-8,076.47-1,686.57

Finding the Fourth Proportional to 5,384.31, 8,076.47 and 1,686.57

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Solution

The fourth proportional to 5,384.31, 8,076.47 and 1,686.57 is: 2,529.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,384.31 : 8,076.47 = 1,686.57 : x
  2. Step 2: Convert to fraction form
    5,384.31/8,076.47 = 1,686.57/x
  3. Step 3: Cross multiply
    5,384.31x = 8,076.47 × 1,686.57
  4. Step 4: Simplify right side
    5,384.31x = 13,621,532.01
  5. Step 5: Solve for x
    x = 13,621,532.01/5,384.31
  6. Step 6: Final answer
    x = 2,529.86

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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.