Home / 6,389.89-8,819.08-3,736.77

Finding the Fourth Proportional to 6,389.89, 8,819.08 and 3,736.77

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Solution

The fourth proportional to 6,389.89, 8,819.08 and 3,736.77 is: 5,157.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389.89 : 8,819.08 = 3,736.77 : x
  2. Step 2: Convert to fraction form
    6,389.89/8,819.08 = 3,736.77/x
  3. Step 3: Cross multiply
    6,389.89x = 8,819.08 × 3,736.77
  4. Step 4: Simplify right side
    6,389.89x = 32,954,831.16
  5. Step 5: Solve for x
    x = 32,954,831.16/6,389.89
  6. Step 6: Final answer
    x = 5,157.34

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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.