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Finding the Fourth Proportional to 7,640.79, 11,437.19 and 5,254.94

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Solution

The fourth proportional to 7,640.79, 11,437.19 and 5,254.94 is: 7,865.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,640.79 : 11,437.19 = 5,254.94 : x
  2. Step 2: Convert to fraction form
    7,640.79/11,437.19 = 5,254.94/x
  3. Step 3: Cross multiply
    7,640.79x = 11,437.19 × 5,254.94
  4. Step 4: Simplify right side
    7,640.79x = 60,101,769.24
  5. Step 5: Solve for x
    x = 60,101,769.24/7,640.79
  6. Step 6: Final answer
    x = 7,865.91

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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.