Home / 4,979.54-6,870.82-2,989.37

Finding the Fourth Proportional to 4,979.54, 6,870.82 and 2,989.37

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Solution

The fourth proportional to 4,979.54, 6,870.82 and 2,989.37 is: 4,124.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.54 : 6,870.82 = 2,989.37 : x
  2. Step 2: Convert to fraction form
    4,979.54/6,870.82 = 2,989.37/x
  3. Step 3: Cross multiply
    4,979.54x = 6,870.82 × 2,989.37
  4. Step 4: Simplify right side
    4,979.54x = 20,539,423.18
  5. Step 5: Solve for x
    x = 20,539,423.18/4,979.54
  6. Step 6: Final answer
    x = 4,124.76

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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.