Home / 3,076.61-4,245.70-1,679.36

Finding the Fourth Proportional to 3,076.61, 4,245.70 and 1,679.36

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Solution

The fourth proportional to 3,076.61, 4,245.70 and 1,679.36 is: 2,317.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,076.61 : 4,245.70 = 1,679.36 : x
  2. Step 2: Convert to fraction form
    3,076.61/4,245.70 = 1,679.36/x
  3. Step 3: Cross multiply
    3,076.61x = 4,245.70 × 1,679.36
  4. Step 4: Simplify right side
    3,076.61x = 7,130,050.36
  5. Step 5: Solve for x
    x = 7,130,050.36/3,076.61
  6. Step 6: Final answer
    x = 2,317.50

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1.5x scale

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.