Home / 2,285.75-3,154.16-1,291.12

Finding the Fourth Proportional to 2,285.75, 3,154.16 and 1,291.12

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Solution

The fourth proportional to 2,285.75, 3,154.16 and 1,291.12 is: 1,781.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.75 : 3,154.16 = 1,291.12 : x
  2. Step 2: Convert to fraction form
    2,285.75/3,154.16 = 1,291.12/x
  3. Step 3: Cross multiply
    2,285.75x = 3,154.16 × 1,291.12
  4. Step 4: Simplify right side
    2,285.75x = 4,072,394.40
  5. Step 5: Solve for x
    x = 4,072,394.40/2,285.75
  6. Step 6: Final answer
    x = 1,781.64

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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.