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Finding the Fourth Proportional to 7,817.92, 10,788.44 and 4,281.05

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Solution

The fourth proportional to 7,817.92, 10,788.44 and 4,281.05 is: 5,907.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,817.92 : 10,788.44 = 4,281.05 : x
  2. Step 2: Convert to fraction form
    7,817.92/10,788.44 = 4,281.05/x
  3. Step 3: Cross multiply
    7,817.92x = 10,788.44 × 4,281.05
  4. Step 4: Simplify right side
    7,817.92x = 46,185,880.71
  5. Step 5: Solve for x
    x = 46,185,880.71/7,817.92
  6. Step 6: Final answer
    x = 5,907.70

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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.