Home / 7,813.16-11,715.12-3,135.36

Finding the Fourth Proportional to 7,813.16, 11,715.12 and 3,135.36

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Solution

The fourth proportional to 7,813.16, 11,715.12 and 3,135.36 is: 4,701.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,813.16 : 11,715.12 = 3,135.36 : x
  2. Step 2: Convert to fraction form
    7,813.16/11,715.12 = 3,135.36/x
  3. Step 3: Cross multiply
    7,813.16x = 11,715.12 × 3,135.36
  4. Step 4: Simplify right side
    7,813.16x = 36,731,118.64
  5. Step 5: Solve for x
    x = 36,731,118.64/7,813.16
  6. Step 6: Final answer
    x = 4,701.19

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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.