Home / 1,929.85-2,894.78-1,055.05

Finding the Fourth Proportional to 1,929.85, 2,894.78 and 1,055.05

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Solution

The fourth proportional to 1,929.85, 2,894.78 and 1,055.05 is: 1,582.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.85 : 2,894.78 = 1,055.05 : x
  2. Step 2: Convert to fraction form
    1,929.85/2,894.78 = 1,055.05/x
  3. Step 3: Cross multiply
    1,929.85x = 2,894.78 × 1,055.05
  4. Step 4: Simplify right side
    1,929.85x = 3,054,132.36
  5. Step 5: Solve for x
    x = 3,054,132.36/1,929.85
  6. Step 6: Final answer
    x = 1,582.58

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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.