Home / 2,576.66-3,555.78-1,397.70

Finding the Fourth Proportional to 2,576.66, 3,555.78 and 1,397.70

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Solution

The fourth proportional to 2,576.66, 3,555.78 and 1,397.70 is: 1,928.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,576.66 : 3,555.78 = 1,397.70 : x
  2. Step 2: Convert to fraction form
    2,576.66/3,555.78 = 1,397.70/x
  3. Step 3: Cross multiply
    2,576.66x = 3,555.78 × 1,397.70
  4. Step 4: Simplify right side
    2,576.66x = 4,969,913.71
  5. Step 5: Solve for x
    x = 4,969,913.71/2,576.66
  6. Step 6: Final answer
    x = 1,928.82

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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.