Home / 2,678.42-4,018.16-1,898.70

Finding the Fourth Proportional to 2,678.42, 4,018.16 and 1,898.70

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Solution

The fourth proportional to 2,678.42, 4,018.16 and 1,898.70 is: 2,848.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.42 : 4,018.16 = 1,898.70 : x
  2. Step 2: Convert to fraction form
    2,678.42/4,018.16 = 1,898.70/x
  3. Step 3: Cross multiply
    2,678.42x = 4,018.16 × 1,898.70
  4. Step 4: Simplify right side
    2,678.42x = 7,629,280.39
  5. Step 5: Solve for x
    x = 7,629,280.39/2,678.42
  6. Step 6: Final answer
    x = 2,848.43

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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.