Home / 1,376.45-1,898.33-933.58

Finding the Fourth Proportional to 1,376.45, 1,898.33 and 933.58

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Solution

The fourth proportional to 1,376.45, 1,898.33 and 933.58 is: 1,287.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,376.45 : 1,898.33 = 933.58 : x
  2. Step 2: Convert to fraction form
    1,376.45/1,898.33 = 933.58/x
  3. Step 3: Cross multiply
    1,376.45x = 1,898.33 × 933.58
  4. Step 4: Simplify right side
    1,376.45x = 1,772,242.92
  5. Step 5: Solve for x
    x = 1,772,242.92/1,376.45
  6. Step 6: Final answer
    x = 1,287.55

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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.