Home / 2,415.98-3,334.38-1,421.84

Finding the Fourth Proportional to 2,415.98, 3,334.38 and 1,421.84

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Solution

The fourth proportional to 2,415.98, 3,334.38 and 1,421.84 is: 1,962.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.98 : 3,334.38 = 1,421.84 : x
  2. Step 2: Convert to fraction form
    2,415.98/3,334.38 = 1,421.84/x
  3. Step 3: Cross multiply
    2,415.98x = 3,334.38 × 1,421.84
  4. Step 4: Simplify right side
    2,415.98x = 4,740,954.86
  5. Step 5: Solve for x
    x = 4,740,954.86/2,415.98
  6. Step 6: Final answer
    x = 1,962.33

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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.