Home / 2,117.80-2,938.99-2,074.60

Finding the Fourth Proportional to 2,117.80, 2,938.99 and 2,074.60

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Solution

The fourth proportional to 2,117.80, 2,938.99 and 2,074.60 is: 2,879.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.80 : 2,938.99 = 2,074.60 : x
  2. Step 2: Convert to fraction form
    2,117.80/2,938.99 = 2,074.60/x
  3. Step 3: Cross multiply
    2,117.80x = 2,938.99 × 2,074.60
  4. Step 4: Simplify right side
    2,117.80x = 6,097,228.65
  5. Step 5: Solve for x
    x = 6,097,228.65/2,117.80
  6. Step 6: Final answer
    x = 2,879.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.