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Finding the Fourth Proportional to 7,773.82, 10,728.12 and 4,371.40

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Solution

The fourth proportional to 7,773.82, 10,728.12 and 4,371.40 is: 6,032.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,773.82 : 10,728.12 = 4,371.40 : x
  2. Step 2: Convert to fraction form
    7,773.82/10,728.12 = 4,371.40/x
  3. Step 3: Cross multiply
    7,773.82x = 10,728.12 × 4,371.40
  4. Step 4: Simplify right side
    7,773.82x = 46,896,903.77
  5. Step 5: Solve for x
    x = 46,896,903.77/7,773.82
  6. Step 6: Final answer
    x = 6,032.67

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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.