Home / 3,390.53-4,678.93-1,898.46

Finding the Fourth Proportional to 3,390.53, 4,678.93 and 1,898.46

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Solution

The fourth proportional to 3,390.53, 4,678.93 and 1,898.46 is: 2,619.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.53 : 4,678.93 = 1,898.46 : x
  2. Step 2: Convert to fraction form
    3,390.53/4,678.93 = 1,898.46/x
  3. Step 3: Cross multiply
    3,390.53x = 4,678.93 × 1,898.46
  4. Step 4: Simplify right side
    3,390.53x = 8,882,781.37
  5. Step 5: Solve for x
    x = 8,882,781.37/3,390.53
  6. Step 6: Final answer
    x = 2,619.88

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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.