Home / 1,945.66-2,918.49-630.51

Finding the Fourth Proportional to 1,945.66, 2,918.49 and 630.51

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Solution

The fourth proportional to 1,945.66, 2,918.49 and 630.51 is: 945.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.66 : 2,918.49 = 630.51 : x
  2. Step 2: Convert to fraction form
    1,945.66/2,918.49 = 630.51/x
  3. Step 3: Cross multiply
    1,945.66x = 2,918.49 × 630.51
  4. Step 4: Simplify right side
    1,945.66x = 1,840,149.32
  5. Step 5: Solve for x
    x = 1,840,149.32/1,945.66
  6. Step 6: Final answer
    x = 945.77

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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.