Home / 3,191.21-4,782.14-1,607.77

Finding the Fourth Proportional to 3,191.21, 4,782.14 and 1,607.77

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Solution

The fourth proportional to 3,191.21, 4,782.14 and 1,607.77 is: 2,409.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.21 : 4,782.14 = 1,607.77 : x
  2. Step 2: Convert to fraction form
    3,191.21/4,782.14 = 1,607.77/x
  3. Step 3: Cross multiply
    3,191.21x = 4,782.14 × 1,607.77
  4. Step 4: Simplify right side
    3,191.21x = 7,688,558.30
  5. Step 5: Solve for x
    x = 7,688,558.30/3,191.21
  6. Step 6: Final answer
    x = 2,409.29

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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.