Home / 8,786.79-12,121.69-5,058.63

Finding the Fourth Proportional to 8,786.79, 12,121.69 and 5,058.63

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Solution

The fourth proportional to 8,786.79, 12,121.69 and 5,058.63 is: 6,978.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,786.79 : 12,121.69 = 5,058.63 : x
  2. Step 2: Convert to fraction form
    8,786.79/12,121.69 = 5,058.63/x
  3. Step 3: Cross multiply
    8,786.79x = 12,121.69 × 5,058.63
  4. Step 4: Simplify right side
    8,786.79x = 61,319,144.68
  5. Step 5: Solve for x
    x = 61,319,144.68/8,786.79
  6. Step 6: Final answer
    x = 6,978.56

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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.