Home / 1,918.74-2,881.32-1,677.36

Finding the Fourth Proportional to 1,918.74, 2,881.32 and 1,677.36

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Solution

The fourth proportional to 1,918.74, 2,881.32 and 1,677.36 is: 2,518.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.74 : 2,881.32 = 1,677.36 : x
  2. Step 2: Convert to fraction form
    1,918.74/2,881.32 = 1,677.36/x
  3. Step 3: Cross multiply
    1,918.74x = 2,881.32 × 1,677.36
  4. Step 4: Simplify right side
    1,918.74x = 4,833,010.92
  5. Step 5: Solve for x
    x = 4,833,010.92/1,918.74
  6. Step 6: Final answer
    x = 2,518.85

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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.