Home / 1,929.32-2,662.45-1,629.36

Finding the Fourth Proportional to 1,929.32, 2,662.45 and 1,629.36

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Solution

The fourth proportional to 1,929.32, 2,662.45 and 1,629.36 is: 2,248.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.32 : 2,662.45 = 1,629.36 : x
  2. Step 2: Convert to fraction form
    1,929.32/2,662.45 = 1,629.36/x
  3. Step 3: Cross multiply
    1,929.32x = 2,662.45 × 1,629.36
  4. Step 4: Simplify right side
    1,929.32x = 4,338,089.53
  5. Step 5: Solve for x
    x = 4,338,089.53/1,929.32
  6. Step 6: Final answer
    x = 2,248.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.