Home / 3,210.67-4,431.14-1,813.69

Finding the Fourth Proportional to 3,210.67, 4,431.14 and 1,813.69

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Solution

The fourth proportional to 3,210.67, 4,431.14 and 1,813.69 is: 2,503.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.67 : 4,431.14 = 1,813.69 : x
  2. Step 2: Convert to fraction form
    3,210.67/4,431.14 = 1,813.69/x
  3. Step 3: Cross multiply
    3,210.67x = 4,431.14 × 1,813.69
  4. Step 4: Simplify right side
    3,210.67x = 8,036,714.31
  5. Step 5: Solve for x
    x = 8,036,714.31/3,210.67
  6. Step 6: Final answer
    x = 2,503.13

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Half scale
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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.