Home / 3,491.90-4,818.61-1,999.47

Finding the Fourth Proportional to 3,491.90, 4,818.61 and 1,999.47

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Solution

The fourth proportional to 3,491.90, 4,818.61 and 1,999.47 is: 2,759.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.90 : 4,818.61 = 1,999.47 : x
  2. Step 2: Convert to fraction form
    3,491.90/4,818.61 = 1,999.47/x
  3. Step 3: Cross multiply
    3,491.90x = 4,818.61 × 1,999.47
  4. Step 4: Simplify right side
    3,491.90x = 9,634,675.46
  5. Step 5: Solve for x
    x = 9,634,675.46/3,491.90
  6. Step 6: Final answer
    x = 2,759.15

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1.5x scale

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.