Home / 2,918.11-4,026.91-1,591.81

Finding the Fourth Proportional to 2,918.11, 4,026.91 and 1,591.81

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Solution

The fourth proportional to 2,918.11, 4,026.91 and 1,591.81 is: 2,196.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.11 : 4,026.91 = 1,591.81 : x
  2. Step 2: Convert to fraction form
    2,918.11/4,026.91 = 1,591.81/x
  3. Step 3: Cross multiply
    2,918.11x = 4,026.91 × 1,591.81
  4. Step 4: Simplify right side
    2,918.11x = 6,410,075.61
  5. Step 5: Solve for x
    x = 6,410,075.61/2,918.11
  6. Step 6: Final answer
    x = 2,196.65

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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.