Home / 2,285.91-3,154.64-1,390.25

Finding the Fourth Proportional to 2,285.91, 3,154.64 and 1,390.25

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Solution

The fourth proportional to 2,285.91, 3,154.64 and 1,390.25 is: 1,918.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.91 : 3,154.64 = 1,390.25 : x
  2. Step 2: Convert to fraction form
    2,285.91/3,154.64 = 1,390.25/x
  3. Step 3: Cross multiply
    2,285.91x = 3,154.64 × 1,390.25
  4. Step 4: Simplify right side
    2,285.91x = 4,385,738.26
  5. Step 5: Solve for x
    x = 4,385,738.26/2,285.91
  6. Step 6: Final answer
    x = 1,918.60

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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.