Home / 3,185.90-4,780.50-2,315.58

Finding the Fourth Proportional to 3,185.90, 4,780.50 and 2,315.58

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Solution

The fourth proportional to 3,185.90, 4,780.50 and 2,315.58 is: 3,474.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.90 : 4,780.50 = 2,315.58 : x
  2. Step 2: Convert to fraction form
    3,185.90/4,780.50 = 2,315.58/x
  3. Step 3: Cross multiply
    3,185.90x = 4,780.50 × 2,315.58
  4. Step 4: Simplify right side
    3,185.90x = 11,069,630.19
  5. Step 5: Solve for x
    x = 11,069,630.19/3,185.90
  6. Step 6: Final answer
    x = 3,474.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.