Home / 3,315.90-4,575.85-1,803.41

Finding the Fourth Proportional to 3,315.90, 4,575.85 and 1,803.41

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Solution

The fourth proportional to 3,315.90, 4,575.85 and 1,803.41 is: 2,488.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.90 : 4,575.85 = 1,803.41 : x
  2. Step 2: Convert to fraction form
    3,315.90/4,575.85 = 1,803.41/x
  3. Step 3: Cross multiply
    3,315.90x = 4,575.85 × 1,803.41
  4. Step 4: Simplify right side
    3,315.90x = 8,252,140.58
  5. Step 5: Solve for x
    x = 8,252,140.58/3,315.90
  6. Step 6: Final answer
    x = 2,488.66

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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.