Home / 3,500.40-4,830.60-1,928.46

Finding the Fourth Proportional to 3,500.40, 4,830.60 and 1,928.46

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Solution

The fourth proportional to 3,500.40, 4,830.60 and 1,928.46 is: 2,661.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,500.40 : 4,830.60 = 1,928.46 : x
  2. Step 2: Convert to fraction form
    3,500.40/4,830.60 = 1,928.46/x
  3. Step 3: Cross multiply
    3,500.40x = 4,830.60 × 1,928.46
  4. Step 4: Simplify right side
    3,500.40x = 9,315,618.88
  5. Step 5: Solve for x
    x = 9,315,618.88/3,500.40
  6. Step 6: Final answer
    x = 2,661.30

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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.