Home / 1,677.98-2,315.33-931.92

Finding the Fourth Proportional to 1,677.98, 2,315.33 and 931.92

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Solution

The fourth proportional to 1,677.98, 2,315.33 and 931.92 is: 1,285.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,677.98 : 2,315.33 = 931.92 : x
  2. Step 2: Convert to fraction form
    1,677.98/2,315.33 = 931.92/x
  3. Step 3: Cross multiply
    1,677.98x = 2,315.33 × 931.92
  4. Step 4: Simplify right side
    1,677.98x = 2,157,704.66
  5. Step 5: Solve for x
    x = 2,157,704.66/1,677.98
  6. Step 6: Final answer
    x = 1,285.90

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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.