Home / 3,085.08-4,278-2,981.18

Finding the Fourth Proportional to 3,085.08, 4,278 and 2,981.18

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Solution

The fourth proportional to 3,085.08, 4,278 and 2,981.18 is: 4,133.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.08 : 4,278 = 2,981.18 : x
  2. Step 2: Convert to fraction form
    3,085.08/4,278 = 2,981.18/x
  3. Step 3: Cross multiply
    3,085.08x = 4,278 × 2,981.18
  4. Step 4: Simplify right side
    3,085.08x = 12,753,466.65
  5. Step 5: Solve for x
    x = 12,753,466.65/3,085.08
  6. Step 6: Final answer
    x = 4,133.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.