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Finding the Fourth Proportional to 28,710, 43,065 and 7,933.50

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Solution

The fourth proportional to 28,710, 43,065 and 7,933.50 is: 11,900.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,710 : 43,065 = 7,933.50 : x
  2. Step 2: Convert to fraction form
    28,710/43,065 = 7,933.50/x
  3. Step 3: Cross multiply
    28,710x = 43,065 × 7,933.50
  4. Step 4: Simplify right side
    28,710x = 341,656,177.50
  5. Step 5: Solve for x
    x = 341,656,177.50/28,710
  6. Step 6: Final answer
    x = 11,900.25

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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.