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Finding the Fourth Proportional to 1,920.41, 2,880.74 and 750.33

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Solution

The fourth proportional to 1,920.41, 2,880.74 and 750.33 is: 1,125.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920.41 : 2,880.74 = 750.33 : x
  2. Step 2: Convert to fraction form
    1,920.41/2,880.74 = 750.33/x
  3. Step 3: Cross multiply
    1,920.41x = 2,880.74 × 750.33
  4. Step 4: Simplify right side
    1,920.41x = 2,161,501.89
  5. Step 5: Solve for x
    x = 2,161,501.89/1,920.41
  6. Step 6: Final answer
    x = 1,125.54

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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.