Home / 2,280.16-3,146.64-1,285.48

Finding the Fourth Proportional to 2,280.16, 3,146.64 and 1,285.48

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Solution

The fourth proportional to 2,280.16, 3,146.64 and 1,285.48 is: 1,773.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.16 : 3,146.64 = 1,285.48 : x
  2. Step 2: Convert to fraction form
    2,280.16/3,146.64 = 1,285.48/x
  3. Step 3: Cross multiply
    2,280.16x = 3,146.64 × 1,285.48
  4. Step 4: Simplify right side
    2,280.16x = 4,044,942.79
  5. Step 5: Solve for x
    x = 4,044,942.79/2,280.16
  6. Step 6: Final answer
    x = 1,773.97

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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.