Home / 3,018.76-4,185.18-2,911.84

Finding the Fourth Proportional to 3,018.76, 4,185.18 and 2,911.84

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Solution

The fourth proportional to 3,018.76, 4,185.18 and 2,911.84 is: 4,036.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,018.76 : 4,185.18 = 2,911.84 : x
  2. Step 2: Convert to fraction form
    3,018.76/4,185.18 = 2,911.84/x
  3. Step 3: Cross multiply
    3,018.76x = 4,185.18 × 2,911.84
  4. Step 4: Simplify right side
    3,018.76x = 12,186,574.53
  5. Step 5: Solve for x
    x = 12,186,574.53/3,018.76
  6. Step 6: Final answer
    x = 4,036.95

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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.