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Finding the Fourth Proportional to 7,773.09, 10,715.54 and 5,379.41

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Solution

The fourth proportional to 7,773.09, 10,715.54 and 5,379.41 is: 7,415.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,773.09 : 10,715.54 = 5,379.41 : x
  2. Step 2: Convert to fraction form
    7,773.09/10,715.54 = 5,379.41/x
  3. Step 3: Cross multiply
    7,773.09x = 10,715.54 × 5,379.41
  4. Step 4: Simplify right side
    7,773.09x = 57,643,313.18
  5. Step 5: Solve for x
    x = 57,643,313.18/7,773.09
  6. Step 6: Final answer
    x = 7,415.75

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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.