Home / 3,271.58-4,904.60-1,421.30

Finding the Fourth Proportional to 3,271.58, 4,904.60 and 1,421.30

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Solution

The fourth proportional to 3,271.58, 4,904.60 and 1,421.30 is: 2,130.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,271.58 : 4,904.60 = 1,421.30 : x
  2. Step 2: Convert to fraction form
    3,271.58/4,904.60 = 1,421.30/x
  3. Step 3: Cross multiply
    3,271.58x = 4,904.60 × 1,421.30
  4. Step 4: Simplify right side
    3,271.58x = 6,970,907.98
  5. Step 5: Solve for x
    x = 6,970,907.98/3,271.58
  6. Step 6: Final answer
    x = 2,130.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.