Home / 2,918.09-4,026.90-1,591.76

Finding the Fourth Proportional to 2,918.09, 4,026.90 and 1,591.76

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Solution

The fourth proportional to 2,918.09, 4,026.90 and 1,591.76 is: 2,196.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.09 : 4,026.90 = 1,591.76 : x
  2. Step 2: Convert to fraction form
    2,918.09/4,026.90 = 1,591.76/x
  3. Step 3: Cross multiply
    2,918.09x = 4,026.90 × 1,591.76
  4. Step 4: Simplify right side
    2,918.09x = 6,409,865.43
  5. Step 5: Solve for x
    x = 6,409,865.43/2,918.09
  6. Step 6: Final answer
    x = 2,196.60

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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.