Home / 2,415.40-3,333.18-1,367.80

Finding the Fourth Proportional to 2,415.40, 3,333.18 and 1,367.80

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Solution

The fourth proportional to 2,415.40, 3,333.18 and 1,367.80 is: 1,887.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.40 : 3,333.18 = 1,367.80 : x
  2. Step 2: Convert to fraction form
    2,415.40/3,333.18 = 1,367.80/x
  3. Step 3: Cross multiply
    2,415.40x = 3,333.18 × 1,367.80
  4. Step 4: Simplify right side
    2,415.40x = 4,559,123.60
  5. Step 5: Solve for x
    x = 4,559,123.60/2,415.40
  6. Step 6: Final answer
    x = 1,887.52

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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.