Home / 2,117.22-3,175.81-730.55

Finding the Fourth Proportional to 2,117.22, 3,175.81 and 730.55

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Solution

The fourth proportional to 2,117.22, 3,175.81 and 730.55 is: 1,095.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.22 : 3,175.81 = 730.55 : x
  2. Step 2: Convert to fraction form
    2,117.22/3,175.81 = 730.55/x
  3. Step 3: Cross multiply
    2,117.22x = 3,175.81 × 730.55
  4. Step 4: Simplify right side
    2,117.22x = 2,320,088.00
  5. Step 5: Solve for x
    x = 2,320,088.00/2,117.22
  6. Step 6: Final answer
    x = 1,095.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.