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Finding the Fourth Proportional to 5,656.88, 8,490.72 and 3,469.88

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Solution

The fourth proportional to 5,656.88, 8,490.72 and 3,469.88 is: 5,208.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,656.88 : 8,490.72 = 3,469.88 : x
  2. Step 2: Convert to fraction form
    5,656.88/8,490.72 = 3,469.88/x
  3. Step 3: Cross multiply
    5,656.88x = 8,490.72 × 3,469.88
  4. Step 4: Simplify right side
    5,656.88x = 29,461,779.51
  5. Step 5: Solve for x
    x = 29,461,779.51/5,656.88
  6. Step 6: Final answer
    x = 5,208.13

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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.