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Finding the Fourth Proportional to 7,087.77, 9,770.99 and 4,985.37

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Solution

The fourth proportional to 7,087.77, 9,770.99 and 4,985.37 is: 6,872.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,087.77 : 9,770.99 = 4,985.37 : x
  2. Step 2: Convert to fraction form
    7,087.77/9,770.99 = 4,985.37/x
  3. Step 3: Cross multiply
    7,087.77x = 9,770.99 × 4,985.37
  4. Step 4: Simplify right side
    7,087.77x = 48,711,975.49
  5. Step 5: Solve for x
    x = 48,711,975.49/7,087.77
  6. Step 6: Final answer
    x = 6,872.68

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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.