Home / 3,152.96-4,729.44-1,421.12

Finding the Fourth Proportional to 3,152.96, 4,729.44 and 1,421.12

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Solution

The fourth proportional to 3,152.96, 4,729.44 and 1,421.12 is: 2,131.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,152.96 : 4,729.44 = 1,421.12 : x
  2. Step 2: Convert to fraction form
    3,152.96/4,729.44 = 1,421.12/x
  3. Step 3: Cross multiply
    3,152.96x = 4,729.44 × 1,421.12
  4. Step 4: Simplify right side
    3,152.96x = 6,721,101.77
  5. Step 5: Solve for x
    x = 6,721,101.77/3,152.96
  6. Step 6: Final answer
    x = 2,131.68

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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.