Home / 2,919.97-4,031.02-1,858.80

Finding the Fourth Proportional to 2,919.97, 4,031.02 and 1,858.80

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Solution

The fourth proportional to 2,919.97, 4,031.02 and 1,858.80 is: 2,566.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.97 : 4,031.02 = 1,858.80 : x
  2. Step 2: Convert to fraction form
    2,919.97/4,031.02 = 1,858.80/x
  3. Step 3: Cross multiply
    2,919.97x = 4,031.02 × 1,858.80
  4. Step 4: Simplify right side
    2,919.97x = 7,492,859.98
  5. Step 5: Solve for x
    x = 7,492,859.98/2,919.97
  6. Step 6: Final answer
    x = 2,566.07

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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.