Home / 1,677.31-2,314.65-931.22

Finding the Fourth Proportional to 1,677.31, 2,314.65 and 931.22

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Solution

The fourth proportional to 1,677.31, 2,314.65 and 931.22 is: 1,285.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,677.31 : 2,314.65 = 931.22 : x
  2. Step 2: Convert to fraction form
    1,677.31/2,314.65 = 931.22/x
  3. Step 3: Cross multiply
    1,677.31x = 2,314.65 × 931.22
  4. Step 4: Simplify right side
    1,677.31x = 2,155,450.67
  5. Step 5: Solve for x
    x = 2,155,450.67/1,677.31
  6. Step 6: Final answer
    x = 1,285.07

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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.