Home / 6,386.21-8,813.30-3,553.59

Finding the Fourth Proportional to 6,386.21, 8,813.30 and 3,553.59

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Solution

The fourth proportional to 6,386.21, 8,813.30 and 3,553.59 is: 4,904.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,386.21 : 8,813.30 = 3,553.59 : x
  2. Step 2: Convert to fraction form
    6,386.21/8,813.30 = 3,553.59/x
  3. Step 3: Cross multiply
    6,386.21x = 8,813.30 × 3,553.59
  4. Step 4: Simplify right side
    6,386.21x = 31,318,836.98
  5. Step 5: Solve for x
    x = 31,318,836.98/6,386.21
  6. Step 6: Final answer
    x = 4,904.14

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1.5x scale

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.