Home / 3,210.96-4,431.36-1,813.68

Finding the Fourth Proportional to 3,210.96, 4,431.36 and 1,813.68

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Solution

The fourth proportional to 3,210.96, 4,431.36 and 1,813.68 is: 2,503.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.96 : 4,431.36 = 1,813.68 : x
  2. Step 2: Convert to fraction form
    3,210.96/4,431.36 = 1,813.68/x
  3. Step 3: Cross multiply
    3,210.96x = 4,431.36 × 1,813.68
  4. Step 4: Simplify right side
    3,210.96x = 8,037,069.00
  5. Step 5: Solve for x
    x = 8,037,069.00/3,210.96
  6. Step 6: Final answer
    x = 2,503.01

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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.