Home / 8,146.80-11,236.32-5,490

Finding the Fourth Proportional to 8,146.80, 11,236.32 and 5,490

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Solution

The fourth proportional to 8,146.80, 11,236.32 and 5,490 is: 7,571.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,146.80 : 11,236.32 = 5,490 : x
  2. Step 2: Convert to fraction form
    8,146.80/11,236.32 = 5,490/x
  3. Step 3: Cross multiply
    8,146.80x = 11,236.32 × 5,490
  4. Step 4: Simplify right side
    8,146.80x = 61,687,396.80
  5. Step 5: Solve for x
    x = 61,687,396.80/8,146.80
  6. Step 6: Final answer
    x = 7,571.98

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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.