Home / 2,947.61-4,066.07-1,868.91

Finding the Fourth Proportional to 2,947.61, 4,066.07 and 1,868.91

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Solution

The fourth proportional to 2,947.61, 4,066.07 and 1,868.91 is: 2,578.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.61 : 4,066.07 = 1,868.91 : x
  2. Step 2: Convert to fraction form
    2,947.61/4,066.07 = 1,868.91/x
  3. Step 3: Cross multiply
    2,947.61x = 4,066.07 × 1,868.91
  4. Step 4: Simplify right side
    2,947.61x = 7,599,118.88
  5. Step 5: Solve for x
    x = 7,599,118.88/2,947.61
  6. Step 6: Final answer
    x = 2,578.06

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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.