Home / 4,880.95-6,735.80-2,890.78

Finding the Fourth Proportional to 4,880.95, 6,735.80 and 2,890.78

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Solution

The fourth proportional to 4,880.95, 6,735.80 and 2,890.78 is: 3,989.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,880.95 : 6,735.80 = 2,890.78 : x
  2. Step 2: Convert to fraction form
    4,880.95/6,735.80 = 2,890.78/x
  3. Step 3: Cross multiply
    4,880.95x = 6,735.80 × 2,890.78
  4. Step 4: Simplify right side
    4,880.95x = 19,471,715.92
  5. Step 5: Solve for x
    x = 19,471,715.92/4,880.95
  6. Step 6: Final answer
    x = 3,989.33

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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.