Home / 1,780.45-2,671.63-914.76

Finding the Fourth Proportional to 1,780.45, 2,671.63 and 914.76

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Solution

The fourth proportional to 1,780.45, 2,671.63 and 914.76 is: 1,372.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.45 : 2,671.63 = 914.76 : x
  2. Step 2: Convert to fraction form
    1,780.45/2,671.63 = 914.76/x
  3. Step 3: Cross multiply
    1,780.45x = 2,671.63 × 914.76
  4. Step 4: Simplify right side
    1,780.45x = 2,443,897.97
  5. Step 5: Solve for x
    x = 2,443,897.97/1,780.45
  6. Step 6: Final answer
    x = 1,372.63

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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.