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Finding the Fourth Proportional to 7,918.48, 11,871.16 and 3,756.24

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Solution

The fourth proportional to 7,918.48, 11,871.16 and 3,756.24 is: 5,631.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.48 : 11,871.16 = 3,756.24 : x
  2. Step 2: Convert to fraction form
    7,918.48/11,871.16 = 3,756.24/x
  3. Step 3: Cross multiply
    7,918.48x = 11,871.16 × 3,756.24
  4. Step 4: Simplify right side
    7,918.48x = 44,590,926.04
  5. Step 5: Solve for x
    x = 44,590,926.04/7,918.48
  6. Step 6: Final answer
    x = 5,631.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.