Home / 8,972.96-13,461.24-3,128

Finding the Fourth Proportional to 8,972.96, 13,461.24 and 3,128

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Solution

The fourth proportional to 8,972.96, 13,461.24 and 3,128 is: 4,692.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.96 : 13,461.24 = 3,128 : x
  2. Step 2: Convert to fraction form
    8,972.96/13,461.24 = 3,128/x
  3. Step 3: Cross multiply
    8,972.96x = 13,461.24 × 3,128
  4. Step 4: Simplify right side
    8,972.96x = 42,106,758.72
  5. Step 5: Solve for x
    x = 42,106,758.72/8,972.96
  6. Step 6: Final answer
    x = 4,692.63

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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.