Home / 2,164.40-2,984.46-1,418.30

Finding the Fourth Proportional to 2,164.40, 2,984.46 and 1,418.30

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Solution

The fourth proportional to 2,164.40, 2,984.46 and 1,418.30 is: 1,955.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,164.40 : 2,984.46 = 1,418.30 : x
  2. Step 2: Convert to fraction form
    2,164.40/2,984.46 = 1,418.30/x
  3. Step 3: Cross multiply
    2,164.40x = 2,984.46 × 1,418.30
  4. Step 4: Simplify right side
    2,164.40x = 4,232,859.62
  5. Step 5: Solve for x
    x = 4,232,859.62/2,164.40
  6. Step 6: Final answer
    x = 1,955.67

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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.