Home / 1,980.16-2,732.58-1,095.91

Finding the Fourth Proportional to 1,980.16, 2,732.58 and 1,095.91

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Solution

The fourth proportional to 1,980.16, 2,732.58 and 1,095.91 is: 1,512.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.16 : 2,732.58 = 1,095.91 : x
  2. Step 2: Convert to fraction form
    1,980.16/2,732.58 = 1,095.91/x
  3. Step 3: Cross multiply
    1,980.16x = 2,732.58 × 1,095.91
  4. Step 4: Simplify right side
    1,980.16x = 2,994,661.75
  5. Step 5: Solve for x
    x = 2,994,661.75/1,980.16
  6. Step 6: Final answer
    x = 1,512.33

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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.