Home / 2,280.18-3,146.48-1,285.28

Finding the Fourth Proportional to 2,280.18, 3,146.48 and 1,285.28

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Solution

The fourth proportional to 2,280.18, 3,146.48 and 1,285.28 is: 1,773.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.18 : 3,146.48 = 1,285.28 : x
  2. Step 2: Convert to fraction form
    2,280.18/3,146.48 = 1,285.28/x
  3. Step 3: Cross multiply
    2,280.18x = 3,146.48 × 1,285.28
  4. Step 4: Simplify right side
    2,280.18x = 4,044,107.81
  5. Step 5: Solve for x
    x = 4,044,107.81/2,280.18
  6. Step 6: Final answer
    x = 1,773.59

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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.