Home / 2,128.86-2,937.15-1,197.18

Finding the Fourth Proportional to 2,128.86, 2,937.15 and 1,197.18

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Solution

The fourth proportional to 2,128.86, 2,937.15 and 1,197.18 is: 1,651.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.86 : 2,937.15 = 1,197.18 : x
  2. Step 2: Convert to fraction form
    2,128.86/2,937.15 = 1,197.18/x
  3. Step 3: Cross multiply
    2,128.86x = 2,937.15 × 1,197.18
  4. Step 4: Simplify right side
    2,128.86x = 3,516,297.24
  5. Step 5: Solve for x
    x = 3,516,297.24/2,128.86
  6. Step 6: Final answer
    x = 1,651.73

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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.