Home / 7,346.19-10,137.86-3,989.01

Finding the Fourth Proportional to 7,346.19, 10,137.86 and 3,989.01

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Solution

The fourth proportional to 7,346.19, 10,137.86 and 3,989.01 is: 5,504.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,346.19 : 10,137.86 = 3,989.01 : x
  2. Step 2: Convert to fraction form
    7,346.19/10,137.86 = 3,989.01/x
  3. Step 3: Cross multiply
    7,346.19x = 10,137.86 × 3,989.01
  4. Step 4: Simplify right side
    7,346.19x = 40,440,004.97
  5. Step 5: Solve for x
    x = 40,440,004.97/7,346.19
  6. Step 6: Final answer
    x = 5,504.90

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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.