Home / 1,683.85-2,516.10-1,286.35

Finding the Fourth Proportional to 1,683.85, 2,516.10 and 1,286.35

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Solution

The fourth proportional to 1,683.85, 2,516.10 and 1,286.35 is: 1,922.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,683.85 : 2,516.10 = 1,286.35 : x
  2. Step 2: Convert to fraction form
    1,683.85/2,516.10 = 1,286.35/x
  3. Step 3: Cross multiply
    1,683.85x = 2,516.10 × 1,286.35
  4. Step 4: Simplify right side
    1,683.85x = 3,236,585.24
  5. Step 5: Solve for x
    x = 3,236,585.24/1,683.85
  6. Step 6: Final answer
    x = 1,922.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.