Home / 2,938.42-4,056.85-1,945.08

Finding the Fourth Proportional to 2,938.42, 4,056.85 and 1,945.08

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Solution

The fourth proportional to 2,938.42, 4,056.85 and 1,945.08 is: 2,685.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.42 : 4,056.85 = 1,945.08 : x
  2. Step 2: Convert to fraction form
    2,938.42/4,056.85 = 1,945.08/x
  3. Step 3: Cross multiply
    2,938.42x = 4,056.85 × 1,945.08
  4. Step 4: Simplify right side
    2,938.42x = 7,890,897.80
  5. Step 5: Solve for x
    x = 7,890,897.80/2,938.42
  6. Step 6: Final answer
    x = 2,685.42

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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.