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Finding the Fourth Proportional to 8,758.90, 13,130.95 and 4,076.49

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Solution

The fourth proportional to 8,758.90, 13,130.95 and 4,076.49 is: 6,111.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.90 : 13,130.95 = 4,076.49 : x
  2. Step 2: Convert to fraction form
    8,758.90/13,130.95 = 4,076.49/x
  3. Step 3: Cross multiply
    8,758.90x = 13,130.95 × 4,076.49
  4. Step 4: Simplify right side
    8,758.90x = 53,528,186.37
  5. Step 5: Solve for x
    x = 53,528,186.37/8,758.90
  6. Step 6: Final answer
    x = 6,111.29

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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.