Home / 1,990.16-2,746.67-1,204.21

Finding the Fourth Proportional to 1,990.16, 2,746.67 and 1,204.21

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Solution

The fourth proportional to 1,990.16, 2,746.67 and 1,204.21 is: 1,661.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.16 : 2,746.67 = 1,204.21 : x
  2. Step 2: Convert to fraction form
    1,990.16/2,746.67 = 1,204.21/x
  3. Step 3: Cross multiply
    1,990.16x = 2,746.67 × 1,204.21
  4. Step 4: Simplify right side
    1,990.16x = 3,307,567.48
  5. Step 5: Solve for x
    x = 3,307,567.48/1,990.16
  6. Step 6: Final answer
    x = 1,661.96

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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.