Home / 2,857.18-3,942.93-1,615.18

Finding the Fourth Proportional to 2,857.18, 3,942.93 and 1,615.18

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Solution

The fourth proportional to 2,857.18, 3,942.93 and 1,615.18 is: 2,228.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.18 : 3,942.93 = 1,615.18 : x
  2. Step 2: Convert to fraction form
    2,857.18/3,942.93 = 1,615.18/x
  3. Step 3: Cross multiply
    2,857.18x = 3,942.93 × 1,615.18
  4. Step 4: Simplify right side
    2,857.18x = 6,368,541.68
  5. Step 5: Solve for x
    x = 6,368,541.68/2,857.18
  6. Step 6: Final answer
    x = 2,228.96

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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.