Home / 1,636.18-2,458.79-1,627.20

Finding the Fourth Proportional to 1,636.18, 2,458.79 and 1,627.20

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Solution

The fourth proportional to 1,636.18, 2,458.79 and 1,627.20 is: 2,445.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.18 : 2,458.79 = 1,627.20 : x
  2. Step 2: Convert to fraction form
    1,636.18/2,458.79 = 1,627.20/x
  3. Step 3: Cross multiply
    1,636.18x = 2,458.79 × 1,627.20
  4. Step 4: Simplify right side
    1,636.18x = 4,000,943.09
  5. Step 5: Solve for x
    x = 4,000,943.09/1,636.18
  6. Step 6: Final answer
    x = 2,445.30

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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.