Home / 1,851.30-2,776.86-1,120.14

Finding the Fourth Proportional to 1,851.30, 2,776.86 and 1,120.14

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Solution

The fourth proportional to 1,851.30, 2,776.86 and 1,120.14 is: 1,680.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851.30 : 2,776.86 = 1,120.14 : x
  2. Step 2: Convert to fraction form
    1,851.30/2,776.86 = 1,120.14/x
  3. Step 3: Cross multiply
    1,851.30x = 2,776.86 × 1,120.14
  4. Step 4: Simplify right side
    1,851.30x = 3,110,471.96
  5. Step 5: Solve for x
    x = 3,110,471.96/1,851.30
  6. Step 6: Final answer
    x = 1,680.16

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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.