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Finding the Fourth Proportional to 5,576.89, 7,689.37 and 4,819.32

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Solution

The fourth proportional to 5,576.89, 7,689.37 and 4,819.32 is: 6,644.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,576.89 : 7,689.37 = 4,819.32 : x
  2. Step 2: Convert to fraction form
    5,576.89/7,689.37 = 4,819.32/x
  3. Step 3: Cross multiply
    5,576.89x = 7,689.37 × 4,819.32
  4. Step 4: Simplify right side
    5,576.89x = 37,057,534.63
  5. Step 5: Solve for x
    x = 37,057,534.63/5,576.89
  6. Step 6: Final answer
    x = 6,644.84

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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.