Home / 2,280.34-3,146.88-1,285.66

Finding the Fourth Proportional to 2,280.34, 3,146.88 and 1,285.66

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Solution

The fourth proportional to 2,280.34, 3,146.88 and 1,285.66 is: 1,774.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.34 : 3,146.88 = 1,285.66 : x
  2. Step 2: Convert to fraction form
    2,280.34/3,146.88 = 1,285.66/x
  3. Step 3: Cross multiply
    2,280.34x = 3,146.88 × 1,285.66
  4. Step 4: Simplify right side
    2,280.34x = 4,045,817.74
  5. Step 5: Solve for x
    x = 4,045,817.74/2,280.34
  6. Step 6: Final answer
    x = 1,774.22

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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.