Home / 4,878.70-6,730.74-2,989.67

Finding the Fourth Proportional to 4,878.70, 6,730.74 and 2,989.67

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Solution

The fourth proportional to 4,878.70, 6,730.74 and 2,989.67 is: 4,124.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.70 : 6,730.74 = 2,989.67 : x
  2. Step 2: Convert to fraction form
    4,878.70/6,730.74 = 2,989.67/x
  3. Step 3: Cross multiply
    4,878.70x = 6,730.74 × 2,989.67
  4. Step 4: Simplify right side
    4,878.70x = 20,122,657.80
  5. Step 5: Solve for x
    x = 20,122,657.80/4,878.70
  6. Step 6: Final answer
    x = 4,124.60

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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.