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Finding the Fourth Proportional to 7,040.60, 9,715.78 and 4,056.56

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Solution

The fourth proportional to 7,040.60, 9,715.78 and 4,056.56 is: 5,597.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,040.60 : 9,715.78 = 4,056.56 : x
  2. Step 2: Convert to fraction form
    7,040.60/9,715.78 = 4,056.56/x
  3. Step 3: Cross multiply
    7,040.60x = 9,715.78 × 4,056.56
  4. Step 4: Simplify right side
    7,040.60x = 39,412,644.52
  5. Step 5: Solve for x
    x = 39,412,644.52/7,040.60
  6. Step 6: Final answer
    x = 5,597.91

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.