Home / 3,122.61-4,678.50-2,390.01

Finding the Fourth Proportional to 3,122.61, 4,678.50 and 2,390.01

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Solution

The fourth proportional to 3,122.61, 4,678.50 and 2,390.01 is: 3,580.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.61 : 4,678.50 = 2,390.01 : x
  2. Step 2: Convert to fraction form
    3,122.61/4,678.50 = 2,390.01/x
  3. Step 3: Cross multiply
    3,122.61x = 4,678.50 × 2,390.01
  4. Step 4: Simplify right side
    3,122.61x = 11,181,661.79
  5. Step 5: Solve for x
    x = 11,181,661.79/3,122.61
  6. Step 6: Final answer
    x = 3,580.87

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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.