Home / 1,441.20-2,160.36-711.30

Finding the Fourth Proportional to 1,441.20, 2,160.36 and 711.30

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Solution

The fourth proportional to 1,441.20, 2,160.36 and 711.30 is: 1,066.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,441.20 : 2,160.36 = 711.30 : x
  2. Step 2: Convert to fraction form
    1,441.20/2,160.36 = 711.30/x
  3. Step 3: Cross multiply
    1,441.20x = 2,160.36 × 711.30
  4. Step 4: Simplify right side
    1,441.20x = 1,536,664.07
  5. Step 5: Solve for x
    x = 1,536,664.07/1,441.20
  6. Step 6: Final answer
    x = 1,066.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.