Home / 1,905.59-2,628.78-1,197.08

Finding the Fourth Proportional to 1,905.59, 2,628.78 and 1,197.08

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Solution

The fourth proportional to 1,905.59, 2,628.78 and 1,197.08 is: 1,651.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.59 : 2,628.78 = 1,197.08 : x
  2. Step 2: Convert to fraction form
    1,905.59/2,628.78 = 1,197.08/x
  3. Step 3: Cross multiply
    1,905.59x = 2,628.78 × 1,197.08
  4. Step 4: Simplify right side
    1,905.59x = 3,146,859.96
  5. Step 5: Solve for x
    x = 3,146,859.96/1,905.59
  6. Step 6: Final answer
    x = 1,651.38

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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.