Home / 2,285.93-3,154.74-1,290.85

Finding the Fourth Proportional to 2,285.93, 3,154.74 and 1,290.85

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Solution

The fourth proportional to 2,285.93, 3,154.74 and 1,290.85 is: 1,781.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.93 : 3,154.74 = 1,290.85 : x
  2. Step 2: Convert to fraction form
    2,285.93/3,154.74 = 1,290.85/x
  3. Step 3: Cross multiply
    2,285.93x = 3,154.74 × 1,290.85
  4. Step 4: Simplify right side
    2,285.93x = 4,072,280.36
  5. Step 5: Solve for x
    x = 4,072,280.36/2,285.93
  6. Step 6: Final answer
    x = 1,781.45

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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.