Home / 1,420.08-1,960.38-1,106.22

Finding the Fourth Proportional to 1,420.08, 1,960.38 and 1,106.22

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Solution

The fourth proportional to 1,420.08, 1,960.38 and 1,106.22 is: 1,527.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420.08 : 1,960.38 = 1,106.22 : x
  2. Step 2: Convert to fraction form
    1,420.08/1,960.38 = 1,106.22/x
  3. Step 3: Cross multiply
    1,420.08x = 1,960.38 × 1,106.22
  4. Step 4: Simplify right side
    1,420.08x = 2,168,611.56
  5. Step 5: Solve for x
    x = 2,168,611.56/1,420.08
  6. Step 6: Final answer
    x = 1,527.11

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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.