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Finding the Fourth Proportional to 9,860.44, 13,607.39 and 5,384.21

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Solution

The fourth proportional to 9,860.44, 13,607.39 and 5,384.21 is: 7,430.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,860.44 : 13,607.39 = 5,384.21 : x
  2. Step 2: Convert to fraction form
    9,860.44/13,607.39 = 5,384.21/x
  3. Step 3: Cross multiply
    9,860.44x = 13,607.39 × 5,384.21
  4. Step 4: Simplify right side
    9,860.44x = 73,264,977.27
  5. Step 5: Solve for x
    x = 73,264,977.27/9,860.44
  6. Step 6: Final answer
    x = 7,430.20

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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.