Home / 8,581.36-12,868.80-3,653.32

Finding the Fourth Proportional to 8,581.36, 12,868.80 and 3,653.32

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Solution

The fourth proportional to 8,581.36, 12,868.80 and 3,653.32 is: 5,478.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,581.36 : 12,868.80 = 3,653.32 : x
  2. Step 2: Convert to fraction form
    8,581.36/12,868.80 = 3,653.32/x
  3. Step 3: Cross multiply
    8,581.36x = 12,868.80 × 3,653.32
  4. Step 4: Simplify right side
    8,581.36x = 47,013,844.42
  5. Step 5: Solve for x
    x = 47,013,844.42/8,581.36
  6. Step 6: Final answer
    x = 5,478.60

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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.