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Finding the Fourth Proportional to 2,818.88, 3,890.04 and 1,576.88

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Solution

The fourth proportional to 2,818.88, 3,890.04 and 1,576.88 is: 2,176.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.88 : 3,890.04 = 1,576.88 : x
  2. Step 2: Convert to fraction form
    2,818.88/3,890.04 = 1,576.88/x
  3. Step 3: Cross multiply
    2,818.88x = 3,890.04 × 1,576.88
  4. Step 4: Simplify right side
    2,818.88x = 6,134,126.28
  5. Step 5: Solve for x
    x = 6,134,126.28/2,818.88
  6. Step 6: Final answer
    x = 2,176.09

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1.5x scale

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.