Home / 1,628.34-2,244.63-1,278.42

Finding the Fourth Proportional to 1,628.34, 2,244.63 and 1,278.42

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Solution

The fourth proportional to 1,628.34, 2,244.63 and 1,278.42 is: 1,762.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.34 : 2,244.63 = 1,278.42 : x
  2. Step 2: Convert to fraction form
    1,628.34/2,244.63 = 1,278.42/x
  3. Step 3: Cross multiply
    1,628.34x = 2,244.63 × 1,278.42
  4. Step 4: Simplify right side
    1,628.34x = 2,869,579.88
  5. Step 5: Solve for x
    x = 2,869,579.88/1,628.34
  6. Step 6: Final answer
    x = 1,762.27

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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.