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Finding the Fourth Proportional to 5,725, 7,900.50 and 3,368.58

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Solution

The fourth proportional to 5,725, 7,900.50 and 3,368.58 is: 4,648.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,725 : 7,900.50 = 3,368.58 : x
  2. Step 2: Convert to fraction form
    5,725/7,900.50 = 3,368.58/x
  3. Step 3: Cross multiply
    5,725x = 7,900.50 × 3,368.58
  4. Step 4: Simplify right side
    5,725x = 26,613,466.29
  5. Step 5: Solve for x
    x = 26,613,466.29/5,725
  6. Step 6: Final answer
    x = 4,648.64

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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.