Home / 3,131.62-4,683.54-2,787.40

Finding the Fourth Proportional to 3,131.62, 4,683.54 and 2,787.40

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Solution

The fourth proportional to 3,131.62, 4,683.54 and 2,787.40 is: 4,168.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.62 : 4,683.54 = 2,787.40 : x
  2. Step 2: Convert to fraction form
    3,131.62/4,683.54 = 2,787.40/x
  3. Step 3: Cross multiply
    3,131.62x = 4,683.54 × 2,787.40
  4. Step 4: Simplify right side
    3,131.62x = 13,054,899.40
  5. Step 5: Solve for x
    x = 13,054,899.40/3,131.62
  6. Step 6: Final answer
    x = 4,168.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.