Home / 2,874.83-3,967.67-1,680.21

Finding the Fourth Proportional to 2,874.83, 3,967.67 and 1,680.21

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Solution

The fourth proportional to 2,874.83, 3,967.67 and 1,680.21 is: 2,318.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.83 : 3,967.67 = 1,680.21 : x
  2. Step 2: Convert to fraction form
    2,874.83/3,967.67 = 1,680.21/x
  3. Step 3: Cross multiply
    2,874.83x = 3,967.67 × 1,680.21
  4. Step 4: Simplify right side
    2,874.83x = 6,666,518.81
  5. Step 5: Solve for x
    x = 6,666,518.81/2,874.83
  6. Step 6: Final answer
    x = 2,318.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.