Home / 2,790.76-4,182.66-1,146.40

Finding the Fourth Proportional to 2,790.76, 4,182.66 and 1,146.40

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Solution

The fourth proportional to 2,790.76, 4,182.66 and 1,146.40 is: 1,718.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.76 : 4,182.66 = 1,146.40 : x
  2. Step 2: Convert to fraction form
    2,790.76/4,182.66 = 1,146.40/x
  3. Step 3: Cross multiply
    2,790.76x = 4,182.66 × 1,146.40
  4. Step 4: Simplify right side
    2,790.76x = 4,795,001.42
  5. Step 5: Solve for x
    x = 4,795,001.42/2,790.76
  6. Step 6: Final answer
    x = 1,718.17

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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.