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Finding the Fourth Proportional to 7,808.19, 11,713.85 and 2,877.85

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Solution

The fourth proportional to 7,808.19, 11,713.85 and 2,877.85 is: 4,317.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,808.19 : 11,713.85 = 2,877.85 : x
  2. Step 2: Convert to fraction form
    7,808.19/11,713.85 = 2,877.85/x
  3. Step 3: Cross multiply
    7,808.19x = 11,713.85 × 2,877.85
  4. Step 4: Simplify right side
    7,808.19x = 33,710,703.22
  5. Step 5: Solve for x
    x = 33,710,703.22/7,808.19
  6. Step 6: Final answer
    x = 4,317.35

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1.5x scale

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.