Home / 6,989.04-9,645.32-4,155.64

Finding the Fourth Proportional to 6,989.04, 9,645.32 and 4,155.64

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Solution

The fourth proportional to 6,989.04, 9,645.32 and 4,155.64 is: 5,735.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,989.04 : 9,645.32 = 4,155.64 : x
  2. Step 2: Convert to fraction form
    6,989.04/9,645.32 = 4,155.64/x
  3. Step 3: Cross multiply
    6,989.04x = 9,645.32 × 4,155.64
  4. Step 4: Simplify right side
    6,989.04x = 40,082,477.60
  5. Step 5: Solve for x
    x = 40,082,477.60/6,989.04
  6. Step 6: Final answer
    x = 5,735.05

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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.