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Finding the Fourth Proportional to 9,579.54, 13,219.63 and 5,387.79

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Solution

The fourth proportional to 9,579.54, 13,219.63 and 5,387.79 is: 7,435.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,579.54 : 13,219.63 = 5,387.79 : x
  2. Step 2: Convert to fraction form
    9,579.54/13,219.63 = 5,387.79/x
  3. Step 3: Cross multiply
    9,579.54x = 13,219.63 × 5,387.79
  4. Step 4: Simplify right side
    9,579.54x = 71,224,547.48
  5. Step 5: Solve for x
    x = 71,224,547.48/9,579.54
  6. Step 6: Final answer
    x = 7,435.07

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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.