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Finding the Fourth Proportional to 7,779.84, 10,736.19 and 4,422.66

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Solution

The fourth proportional to 7,779.84, 10,736.19 and 4,422.66 is: 6,103.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.84 : 10,736.19 = 4,422.66 : x
  2. Step 2: Convert to fraction form
    7,779.84/10,736.19 = 4,422.66/x
  3. Step 3: Cross multiply
    7,779.84x = 10,736.19 × 4,422.66
  4. Step 4: Simplify right side
    7,779.84x = 47,482,518.07
  5. Step 5: Solve for x
    x = 47,482,518.07/7,779.84
  6. Step 6: Final answer
    x = 6,103.28

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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.