Home / 1,928.90-2,893.80-630.38

Finding the Fourth Proportional to 1,928.90, 2,893.80 and 630.38

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Solution

The fourth proportional to 1,928.90, 2,893.80 and 630.38 is: 945.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.90 : 2,893.80 = 630.38 : x
  2. Step 2: Convert to fraction form
    1,928.90/2,893.80 = 630.38/x
  3. Step 3: Cross multiply
    1,928.90x = 2,893.80 × 630.38
  4. Step 4: Simplify right side
    1,928.90x = 1,824,193.64
  5. Step 5: Solve for x
    x = 1,824,193.64/1,928.90
  6. Step 6: Final answer
    x = 945.72

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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.