Home / 3,420.37-4,720.23-1,928.35

Finding the Fourth Proportional to 3,420.37, 4,720.23 and 1,928.35

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Solution

The fourth proportional to 3,420.37, 4,720.23 and 1,928.35 is: 2,661.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.37 : 4,720.23 = 1,928.35 : x
  2. Step 2: Convert to fraction form
    3,420.37/4,720.23 = 1,928.35/x
  3. Step 3: Cross multiply
    3,420.37x = 4,720.23 × 1,928.35
  4. Step 4: Simplify right side
    3,420.37x = 9,102,255.52
  5. Step 5: Solve for x
    x = 9,102,255.52/3,420.37
  6. Step 6: Final answer
    x = 2,661.19

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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.