Home / 2,845.76-3,928.08-1,903.18

Finding the Fourth Proportional to 2,845.76, 3,928.08 and 1,903.18

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Solution

The fourth proportional to 2,845.76, 3,928.08 and 1,903.18 is: 2,627.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,845.76 : 3,928.08 = 1,903.18 : x
  2. Step 2: Convert to fraction form
    2,845.76/3,928.08 = 1,903.18/x
  3. Step 3: Cross multiply
    2,845.76x = 3,928.08 × 1,903.18
  4. Step 4: Simplify right side
    2,845.76x = 7,475,843.29
  5. Step 5: Solve for x
    x = 7,475,843.29/2,845.76
  6. Step 6: Final answer
    x = 2,627.01

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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.