Home / 3,125.50-4,295.15-2,980.95

Finding the Fourth Proportional to 3,125.50, 4,295.15 and 2,980.95

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Solution

The fourth proportional to 3,125.50, 4,295.15 and 2,980.95 is: 4,096.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.50 : 4,295.15 = 2,980.95 : x
  2. Step 2: Convert to fraction form
    3,125.50/4,295.15 = 2,980.95/x
  3. Step 3: Cross multiply
    3,125.50x = 4,295.15 × 2,980.95
  4. Step 4: Simplify right side
    3,125.50x = 12,803,634.84
  5. Step 5: Solve for x
    x = 12,803,634.84/3,125.50
  6. Step 6: Final answer
    x = 4,096.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.