Home / 3,787.39-5,681.37-1,155.12

Finding the Fourth Proportional to 3,787.39, 5,681.37 and 1,155.12

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Solution

The fourth proportional to 3,787.39, 5,681.37 and 1,155.12 is: 1,732.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,787.39 : 5,681.37 = 1,155.12 : x
  2. Step 2: Convert to fraction form
    3,787.39/5,681.37 = 1,155.12/x
  3. Step 3: Cross multiply
    3,787.39x = 5,681.37 × 1,155.12
  4. Step 4: Simplify right side
    3,787.39x = 6,562,685.42
  5. Step 5: Solve for x
    x = 6,562,685.42/3,787.39
  6. Step 6: Final answer
    x = 1,732.77

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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.