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Finding the Fourth Proportional to 2,507.27, 3,459.95 and 1,388.21

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Solution

The fourth proportional to 2,507.27, 3,459.95 and 1,388.21 is: 1,915.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,507.27 : 3,459.95 = 1,388.21 : x
  2. Step 2: Convert to fraction form
    2,507.27/3,459.95 = 1,388.21/x
  3. Step 3: Cross multiply
    2,507.27x = 3,459.95 × 1,388.21
  4. Step 4: Simplify right side
    2,507.27x = 4,803,112.95
  5. Step 5: Solve for x
    x = 4,803,112.95/2,507.27
  6. Step 6: Final answer
    x = 1,915.68

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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.