Home / 2,685.84-3,701.34-1,938.42

Finding the Fourth Proportional to 2,685.84, 3,701.34 and 1,938.42

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Solution

The fourth proportional to 2,685.84, 3,701.34 and 1,938.42 is: 2,671.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.84 : 3,701.34 = 1,938.42 : x
  2. Step 2: Convert to fraction form
    2,685.84/3,701.34 = 1,938.42/x
  3. Step 3: Cross multiply
    2,685.84x = 3,701.34 × 1,938.42
  4. Step 4: Simplify right side
    2,685.84x = 7,174,751.48
  5. Step 5: Solve for x
    x = 7,174,751.48/2,685.84
  6. Step 6: Final answer
    x = 2,671.32

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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.