Home / 3,390.49-4,678.50-1,973.98

Finding the Fourth Proportional to 3,390.49, 4,678.50 and 1,973.98

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Solution

The fourth proportional to 3,390.49, 4,678.50 and 1,973.98 is: 2,723.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.49 : 4,678.50 = 1,973.98 : x
  2. Step 2: Convert to fraction form
    3,390.49/4,678.50 = 1,973.98/x
  3. Step 3: Cross multiply
    3,390.49x = 4,678.50 × 1,973.98
  4. Step 4: Simplify right side
    3,390.49x = 9,235,265.43
  5. Step 5: Solve for x
    x = 9,235,265.43/3,390.49
  6. Step 6: Final answer
    x = 2,723.87

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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.