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Finding the Fourth Proportional to 4,266.72, 6,400.80 and 2,970.72

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Solution

The fourth proportional to 4,266.72, 6,400.80 and 2,970.72 is: 4,456.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,266.72 : 6,400.80 = 2,970.72 : x
  2. Step 2: Convert to fraction form
    4,266.72/6,400.80 = 2,970.72/x
  3. Step 3: Cross multiply
    4,266.72x = 6,400.80 × 2,970.72
  4. Step 4: Simplify right side
    4,266.72x = 19,014,984.58
  5. Step 5: Solve for x
    x = 19,014,984.58/4,266.72
  6. Step 6: Final answer
    x = 4,456.58

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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.