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Finding the Fourth Proportional to 8,690.94, 13,023.93 and 4,945.71

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Solution

The fourth proportional to 8,690.94, 13,023.93 and 4,945.71 is: 7,411.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.94 : 13,023.93 = 4,945.71 : x
  2. Step 2: Convert to fraction form
    8,690.94/13,023.93 = 4,945.71/x
  3. Step 3: Cross multiply
    8,690.94x = 13,023.93 × 4,945.71
  4. Step 4: Simplify right side
    8,690.94x = 64,412,580.84
  5. Step 5: Solve for x
    x = 64,412,580.84/8,690.94
  6. Step 6: Final answer
    x = 7,411.46

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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.