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Finding the Fourth Proportional to 4,792.50, 7,188.75 and 1,329.75

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Solution

The fourth proportional to 4,792.50, 7,188.75 and 1,329.75 is: 1,994.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,792.50 : 7,188.75 = 1,329.75 : x
  2. Step 2: Convert to fraction form
    4,792.50/7,188.75 = 1,329.75/x
  3. Step 3: Cross multiply
    4,792.50x = 7,188.75 × 1,329.75
  4. Step 4: Simplify right side
    4,792.50x = 9,559,240.31
  5. Step 5: Solve for x
    x = 9,559,240.31/4,792.50
  6. Step 6: Final answer
    x = 1,994.63

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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.