Home / 2,184.40-3,015.56-1,438.84

Finding the Fourth Proportional to 2,184.40, 3,015.56 and 1,438.84

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Solution

The fourth proportional to 2,184.40, 3,015.56 and 1,438.84 is: 1,986.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,184.40 : 3,015.56 = 1,438.84 : x
  2. Step 2: Convert to fraction form
    2,184.40/3,015.56 = 1,438.84/x
  3. Step 3: Cross multiply
    2,184.40x = 3,015.56 × 1,438.84
  4. Step 4: Simplify right side
    2,184.40x = 4,338,908.35
  5. Step 5: Solve for x
    x = 4,338,908.35/2,184.40
  6. Step 6: Final answer
    x = 1,986.32

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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.