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Finding the Fourth Proportional to 7,828.92, 10,804.05 and 4,292.09

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Solution

The fourth proportional to 7,828.92, 10,804.05 and 4,292.09 is: 5,923.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,828.92 : 10,804.05 = 4,292.09 : x
  2. Step 2: Convert to fraction form
    7,828.92/10,804.05 = 4,292.09/x
  3. Step 3: Cross multiply
    7,828.92x = 10,804.05 × 4,292.09
  4. Step 4: Simplify right side
    7,828.92x = 46,371,941.46
  5. Step 5: Solve for x
    x = 46,371,941.46/7,828.92
  6. Step 6: Final answer
    x = 5,923.16

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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.