Home / 2,857.34-3,941.54-1,678.18

Finding the Fourth Proportional to 2,857.34, 3,941.54 and 1,678.18

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Solution

The fourth proportional to 2,857.34, 3,941.54 and 1,678.18 is: 2,314.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.34 : 3,941.54 = 1,678.18 : x
  2. Step 2: Convert to fraction form
    2,857.34/3,941.54 = 1,678.18/x
  3. Step 3: Cross multiply
    2,857.34x = 3,941.54 × 1,678.18
  4. Step 4: Simplify right side
    2,857.34x = 6,614,613.60
  5. Step 5: Solve for x
    x = 6,614,613.60/2,857.34
  6. Step 6: Final answer
    x = 2,314.96

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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.