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Finding the Fourth Proportional to 5,402.58, 7,455.40 and 3,012.58

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Solution

The fourth proportional to 5,402.58, 7,455.40 and 3,012.58 is: 4,157.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,402.58 : 7,455.40 = 3,012.58 : x
  2. Step 2: Convert to fraction form
    5,402.58/7,455.40 = 3,012.58/x
  3. Step 3: Cross multiply
    5,402.58x = 7,455.40 × 3,012.58
  4. Step 4: Simplify right side
    5,402.58x = 22,459,988.93
  5. Step 5: Solve for x
    x = 22,459,988.93/5,402.58
  6. Step 6: Final answer
    x = 4,157.27

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.