Home / 3,315.40-4,575.71-1,899.59

Finding the Fourth Proportional to 3,315.40, 4,575.71 and 1,899.59

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Solution

The fourth proportional to 3,315.40, 4,575.71 and 1,899.59 is: 2,621.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.40 : 4,575.71 = 1,899.59 : x
  2. Step 2: Convert to fraction form
    3,315.40/4,575.71 = 1,899.59/x
  3. Step 3: Cross multiply
    3,315.40x = 4,575.71 × 1,899.59
  4. Step 4: Simplify right side
    3,315.40x = 8,691,954.83
  5. Step 5: Solve for x
    x = 8,691,954.83/3,315.40
  6. Step 6: Final answer
    x = 2,621.69

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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.