Home / 8,345.64-11,515.71-5,361.87

Finding the Fourth Proportional to 8,345.64, 11,515.71 and 5,361.87

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Solution

The fourth proportional to 8,345.64, 11,515.71 and 5,361.87 is: 7,398.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,345.64 : 11,515.71 = 5,361.87 : x
  2. Step 2: Convert to fraction form
    8,345.64/11,515.71 = 5,361.87/x
  3. Step 3: Cross multiply
    8,345.64x = 11,515.71 × 5,361.87
  4. Step 4: Simplify right side
    8,345.64x = 61,745,739.98
  5. Step 5: Solve for x
    x = 61,745,739.98/8,345.64
  6. Step 6: Final answer
    x = 7,398.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.