Home / 2,161.69-3,216.59-2,154.40

Finding the Fourth Proportional to 2,161.69, 3,216.59 and 2,154.40

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Solution

The fourth proportional to 2,161.69, 3,216.59 and 2,154.40 is: 3,205.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.69 : 3,216.59 = 2,154.40 : x
  2. Step 2: Convert to fraction form
    2,161.69/3,216.59 = 2,154.40/x
  3. Step 3: Cross multiply
    2,161.69x = 3,216.59 × 2,154.40
  4. Step 4: Simplify right side
    2,161.69x = 6,929,821.50
  5. Step 5: Solve for x
    x = 6,929,821.50/2,161.69
  6. Step 6: Final answer
    x = 3,205.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.