Home / 2,678.77-4,018.01-1,118.71

Finding the Fourth Proportional to 2,678.77, 4,018.01 and 1,118.71

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Solution

The fourth proportional to 2,678.77, 4,018.01 and 1,118.71 is: 1,678.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.77 : 4,018.01 = 1,118.71 : x
  2. Step 2: Convert to fraction form
    2,678.77/4,018.01 = 1,118.71/x
  3. Step 3: Cross multiply
    2,678.77x = 4,018.01 × 1,118.71
  4. Step 4: Simplify right side
    2,678.77x = 4,494,987.40
  5. Step 5: Solve for x
    x = 4,494,987.40/2,678.77
  6. Step 6: Final answer
    x = 1,678.00

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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.