Home / 4,078.40-5,628.24-2,399.81

Finding the Fourth Proportional to 4,078.40, 5,628.24 and 2,399.81

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Solution

The fourth proportional to 4,078.40, 5,628.24 and 2,399.81 is: 3,311.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.40 : 5,628.24 = 2,399.81 : x
  2. Step 2: Convert to fraction form
    4,078.40/5,628.24 = 2,399.81/x
  3. Step 3: Cross multiply
    4,078.40x = 5,628.24 × 2,399.81
  4. Step 4: Simplify right side
    4,078.40x = 13,506,678.49
  5. Step 5: Solve for x
    x = 13,506,678.49/4,078.40
  6. Step 6: Final answer
    x = 3,311.76

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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.