Home / 1,809.20-2,706.60-1,636.40

Finding the Fourth Proportional to 1,809.20, 2,706.60 and 1,636.40

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Solution

The fourth proportional to 1,809.20, 2,706.60 and 1,636.40 is: 2,448.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,809.20 : 2,706.60 = 1,636.40 : x
  2. Step 2: Convert to fraction form
    1,809.20/2,706.60 = 1,636.40/x
  3. Step 3: Cross multiply
    1,809.20x = 2,706.60 × 1,636.40
  4. Step 4: Simplify right side
    1,809.20x = 4,429,080.24
  5. Step 5: Solve for x
    x = 4,429,080.24/1,809.20
  6. Step 6: Final answer
    x = 2,448.09

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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.