Home / 3,117.42-4,297.19-2,120.99

Finding the Fourth Proportional to 3,117.42, 4,297.19 and 2,120.99

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Solution

The fourth proportional to 3,117.42, 4,297.19 and 2,120.99 is: 2,923.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.42 : 4,297.19 = 2,120.99 : x
  2. Step 2: Convert to fraction form
    3,117.42/4,297.19 = 2,120.99/x
  3. Step 3: Cross multiply
    3,117.42x = 4,297.19 × 2,120.99
  4. Step 4: Simplify right side
    3,117.42x = 9,114,264.93
  5. Step 5: Solve for x
    x = 9,114,264.93/3,117.42
  6. Step 6: Final answer
    x = 2,923.66

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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.