Home / 6,078.81-8,389.47-4,189.79

Finding the Fourth Proportional to 6,078.81, 8,389.47 and 4,189.79

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Solution

The fourth proportional to 6,078.81, 8,389.47 and 4,189.79 is: 5,782.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,078.81 : 8,389.47 = 4,189.79 : x
  2. Step 2: Convert to fraction form
    6,078.81/8,389.47 = 4,189.79/x
  3. Step 3: Cross multiply
    6,078.81x = 8,389.47 × 4,189.79
  4. Step 4: Simplify right side
    6,078.81x = 35,150,154.20
  5. Step 5: Solve for x
    x = 35,150,154.20/6,078.81
  6. Step 6: Final answer
    x = 5,782.40

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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.