Home / 2,938.99-4,055.93-1,680.25

Finding the Fourth Proportional to 2,938.99, 4,055.93 and 1,680.25

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Solution

The fourth proportional to 2,938.99, 4,055.93 and 1,680.25 is: 2,318.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.99 : 4,055.93 = 1,680.25 : x
  2. Step 2: Convert to fraction form
    2,938.99/4,055.93 = 1,680.25/x
  3. Step 3: Cross multiply
    2,938.99x = 4,055.93 × 1,680.25
  4. Step 4: Simplify right side
    2,938.99x = 6,814,976.38
  5. Step 5: Solve for x
    x = 6,814,976.38/2,938.99
  6. Step 6: Final answer
    x = 2,318.82

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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.