Home / 1,990.47-2,746.85-1,194.18

Finding the Fourth Proportional to 1,990.47, 2,746.85 and 1,194.18

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Solution

The fourth proportional to 1,990.47, 2,746.85 and 1,194.18 is: 1,647.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.47 : 2,746.85 = 1,194.18 : x
  2. Step 2: Convert to fraction form
    1,990.47/2,746.85 = 1,194.18/x
  3. Step 3: Cross multiply
    1,990.47x = 2,746.85 × 1,194.18
  4. Step 4: Simplify right side
    1,990.47x = 3,280,217.06
  5. Step 5: Solve for x
    x = 3,280,217.06/1,990.47
  6. Step 6: Final answer
    x = 1,647.96

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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.