Home / 3,390.18-4,678.26-1,897.98

Finding the Fourth Proportional to 3,390.18, 4,678.26 and 1,897.98

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Solution

The fourth proportional to 3,390.18, 4,678.26 and 1,897.98 is: 2,619.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.18 : 4,678.26 = 1,897.98 : x
  2. Step 2: Convert to fraction form
    3,390.18/4,678.26 = 1,897.98/x
  3. Step 3: Cross multiply
    3,390.18x = 4,678.26 × 1,897.98
  4. Step 4: Simplify right side
    3,390.18x = 8,879,243.91
  5. Step 5: Solve for x
    x = 8,879,243.91/3,390.18
  6. Step 6: Final answer
    x = 2,619.11

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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.