Home / 8,428.98-11,634.70-4,891.50

Finding the Fourth Proportional to 8,428.98, 11,634.70 and 4,891.50

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Solution

The fourth proportional to 8,428.98, 11,634.70 and 4,891.50 is: 6,751.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.98 : 11,634.70 = 4,891.50 : x
  2. Step 2: Convert to fraction form
    8,428.98/11,634.70 = 4,891.50/x
  3. Step 3: Cross multiply
    8,428.98x = 11,634.70 × 4,891.50
  4. Step 4: Simplify right side
    8,428.98x = 56,911,135.05
  5. Step 5: Solve for x
    x = 56,911,135.05/8,428.98
  6. Step 6: Final answer
    x = 6,751.84

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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.