Home / 3,485.21-4,808.34-1,972.55

Finding the Fourth Proportional to 3,485.21, 4,808.34 and 1,972.55

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Solution

The fourth proportional to 3,485.21, 4,808.34 and 1,972.55 is: 2,721.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485.21 : 4,808.34 = 1,972.55 : x
  2. Step 2: Convert to fraction form
    3,485.21/4,808.34 = 1,972.55/x
  3. Step 3: Cross multiply
    3,485.21x = 4,808.34 × 1,972.55
  4. Step 4: Simplify right side
    3,485.21x = 9,484,703.09
  5. Step 5: Solve for x
    x = 9,484,703.09/3,485.21
  6. Step 6: Final answer
    x = 2,721.42

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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.