Home / 1,384.11-2,076.45-459.93

Finding the Fourth Proportional to 1,384.11, 2,076.45 and 459.93

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Solution

The fourth proportional to 1,384.11, 2,076.45 and 459.93 is: 689.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384.11 : 2,076.45 = 459.93 : x
  2. Step 2: Convert to fraction form
    1,384.11/2,076.45 = 459.93/x
  3. Step 3: Cross multiply
    1,384.11x = 2,076.45 × 459.93
  4. Step 4: Simplify right side
    1,384.11x = 955,021.65
  5. Step 5: Solve for x
    x = 955,021.65/1,384.11
  6. Step 6: Final answer
    x = 689.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.