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Finding the Fourth Proportional to 6,811.98, 10,218.30 and 1,881.50

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Solution

The fourth proportional to 6,811.98, 10,218.30 and 1,881.50 is: 2,822.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,811.98 : 10,218.30 = 1,881.50 : x
  2. Step 2: Convert to fraction form
    6,811.98/10,218.30 = 1,881.50/x
  3. Step 3: Cross multiply
    6,811.98x = 10,218.30 × 1,881.50
  4. Step 4: Simplify right side
    6,811.98x = 19,225,731.45
  5. Step 5: Solve for x
    x = 19,225,731.45/6,811.98
  6. Step 6: Final answer
    x = 2,822.34

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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.