Home / 2,139.54-2,951.50-1,666.58

Finding the Fourth Proportional to 2,139.54, 2,951.50 and 1,666.58

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Solution

The fourth proportional to 2,139.54, 2,951.50 and 1,666.58 is: 2,299.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139.54 : 2,951.50 = 1,666.58 : x
  2. Step 2: Convert to fraction form
    2,139.54/2,951.50 = 1,666.58/x
  3. Step 3: Cross multiply
    2,139.54x = 2,951.50 × 1,666.58
  4. Step 4: Simplify right side
    2,139.54x = 4,918,910.87
  5. Step 5: Solve for x
    x = 4,918,910.87/2,139.54
  6. Step 6: Final answer
    x = 2,299.05

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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.