Home / 1,963.68-2,945.70-647.44

Finding the Fourth Proportional to 1,963.68, 2,945.70 and 647.44

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Solution

The fourth proportional to 1,963.68, 2,945.70 and 647.44 is: 971.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,963.68 : 2,945.70 = 647.44 : x
  2. Step 2: Convert to fraction form
    1,963.68/2,945.70 = 647.44/x
  3. Step 3: Cross multiply
    1,963.68x = 2,945.70 × 647.44
  4. Step 4: Simplify right side
    1,963.68x = 1,907,159.42
  5. Step 5: Solve for x
    x = 1,907,159.42/1,963.68
  6. Step 6: Final answer
    x = 971.22

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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.