Home / 3,312.40-4,969.14-1,121.26

Finding the Fourth Proportional to 3,312.40, 4,969.14 and 1,121.26

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Solution

The fourth proportional to 3,312.40, 4,969.14 and 1,121.26 is: 1,682.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.40 : 4,969.14 = 1,121.26 : x
  2. Step 2: Convert to fraction form
    3,312.40/4,969.14 = 1,121.26/x
  3. Step 3: Cross multiply
    3,312.40x = 4,969.14 × 1,121.26
  4. Step 4: Simplify right side
    3,312.40x = 5,571,697.92
  5. Step 5: Solve for x
    x = 5,571,697.92/3,312.40
  6. Step 6: Final answer
    x = 1,682.07

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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.