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Finding the Fourth Proportional to 7,800.79, 11,699.47 and 2,252.94

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Solution

The fourth proportional to 7,800.79, 11,699.47 and 2,252.94 is: 3,378.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,800.79 : 11,699.47 = 2,252.94 : x
  2. Step 2: Convert to fraction form
    7,800.79/11,699.47 = 2,252.94/x
  3. Step 3: Cross multiply
    7,800.79x = 11,699.47 × 2,252.94
  4. Step 4: Simplify right side
    7,800.79x = 26,358,203.94
  5. Step 5: Solve for x
    x = 26,358,203.94/7,800.79
  6. Step 6: Final answer
    x = 3,378.91

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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.