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Finding the Fourth Proportional to 7,784.67, 10,745.16 and 5,427.57

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Solution

The fourth proportional to 7,784.67, 10,745.16 and 5,427.57 is: 7,491.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,784.67 : 10,745.16 = 5,427.57 : x
  2. Step 2: Convert to fraction form
    7,784.67/10,745.16 = 5,427.57/x
  3. Step 3: Cross multiply
    7,784.67x = 10,745.16 × 5,427.57
  4. Step 4: Simplify right side
    7,784.67x = 58,320,108.06
  5. Step 5: Solve for x
    x = 58,320,108.06/7,784.67
  6. Step 6: Final answer
    x = 7,491.66

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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.