Home / 1,920.42-2,880.63-1,054.26

Finding the Fourth Proportional to 1,920.42, 2,880.63 and 1,054.26

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Solution

The fourth proportional to 1,920.42, 2,880.63 and 1,054.26 is: 1,581.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920.42 : 2,880.63 = 1,054.26 : x
  2. Step 2: Convert to fraction form
    1,920.42/2,880.63 = 1,054.26/x
  3. Step 3: Cross multiply
    1,920.42x = 2,880.63 × 1,054.26
  4. Step 4: Simplify right side
    1,920.42x = 3,036,932.98
  5. Step 5: Solve for x
    x = 3,036,932.98/1,920.42
  6. Step 6: Final answer
    x = 1,581.39

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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.