Home / 2,056.12-3,084.90-1,285.72

Finding the Fourth Proportional to 2,056.12, 3,084.90 and 1,285.72

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Solution

The fourth proportional to 2,056.12, 3,084.90 and 1,285.72 is: 1,929.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,056.12 : 3,084.90 = 1,285.72 : x
  2. Step 2: Convert to fraction form
    2,056.12/3,084.90 = 1,285.72/x
  3. Step 3: Cross multiply
    2,056.12x = 3,084.90 × 1,285.72
  4. Step 4: Simplify right side
    2,056.12x = 3,966,317.63
  5. Step 5: Solve for x
    x = 3,966,317.63/2,056.12
  6. Step 6: Final answer
    x = 1,929.03

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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.