Home / 2,685.56-3,706.49-1,638.23

Finding the Fourth Proportional to 2,685.56, 3,706.49 and 1,638.23

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Solution

The fourth proportional to 2,685.56, 3,706.49 and 1,638.23 is: 2,261.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.56 : 3,706.49 = 1,638.23 : x
  2. Step 2: Convert to fraction form
    2,685.56/3,706.49 = 1,638.23/x
  3. Step 3: Cross multiply
    2,685.56x = 3,706.49 × 1,638.23
  4. Step 4: Simplify right side
    2,685.56x = 6,072,084.19
  5. Step 5: Solve for x
    x = 6,072,084.19/2,685.56
  6. Step 6: Final answer
    x = 2,261.01

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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.