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Finding the Fourth Proportional to 5,384.61, 7,428.98 and 4,388.18

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Solution

The fourth proportional to 5,384.61, 7,428.98 and 4,388.18 is: 6,054.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,384.61 : 7,428.98 = 4,388.18 : x
  2. Step 2: Convert to fraction form
    5,384.61/7,428.98 = 4,388.18/x
  3. Step 3: Cross multiply
    5,384.61x = 7,428.98 × 4,388.18
  4. Step 4: Simplify right side
    5,384.61x = 32,599,675.28
  5. Step 5: Solve for x
    x = 32,599,675.28/5,384.61
  6. Step 6: Final answer
    x = 6,054.23

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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.