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Finding the Fourth Proportional to 7,777.39, 10,729.73 and 4,788.03

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Solution

The fourth proportional to 7,777.39, 10,729.73 and 4,788.03 is: 6,605.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,777.39 : 10,729.73 = 4,788.03 : x
  2. Step 2: Convert to fraction form
    7,777.39/10,729.73 = 4,788.03/x
  3. Step 3: Cross multiply
    7,777.39x = 10,729.73 × 4,788.03
  4. Step 4: Simplify right side
    7,777.39x = 51,374,281.10
  5. Step 5: Solve for x
    x = 51,374,281.10/7,777.39
  6. Step 6: Final answer
    x = 6,605.60

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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.