Home / 1,679.61-2,516.39-1,580.78

Finding the Fourth Proportional to 1,679.61, 2,516.39 and 1,580.78

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Solution

The fourth proportional to 1,679.61, 2,516.39 and 1,580.78 is: 2,368.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.61 : 2,516.39 = 1,580.78 : x
  2. Step 2: Convert to fraction form
    1,679.61/2,516.39 = 1,580.78/x
  3. Step 3: Cross multiply
    1,679.61x = 2,516.39 × 1,580.78
  4. Step 4: Simplify right side
    1,679.61x = 3,977,844.43
  5. Step 5: Solve for x
    x = 3,977,844.43/1,679.61
  6. Step 6: Final answer
    x = 2,368.32

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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.