Home / 4,979.20-6,868.32-3,798.40

Finding the Fourth Proportional to 4,979.20, 6,868.32 and 3,798.40

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Solution

The fourth proportional to 4,979.20, 6,868.32 and 3,798.40 is: 5,239.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.20 : 6,868.32 = 3,798.40 : x
  2. Step 2: Convert to fraction form
    4,979.20/6,868.32 = 3,798.40/x
  3. Step 3: Cross multiply
    4,979.20x = 6,868.32 × 3,798.40
  4. Step 4: Simplify right side
    4,979.20x = 26,088,626.69
  5. Step 5: Solve for x
    x = 26,088,626.69/4,979.20
  6. Step 6: Final answer
    x = 5,239.52

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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.