Home / 1,205.28-1,675.08-1,192.32

Finding the Fourth Proportional to 1,205.28, 1,675.08 and 1,192.32

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Solution

The fourth proportional to 1,205.28, 1,675.08 and 1,192.32 is: 1,657.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205.28 : 1,675.08 = 1,192.32 : x
  2. Step 2: Convert to fraction form
    1,205.28/1,675.08 = 1,192.32/x
  3. Step 3: Cross multiply
    1,205.28x = 1,675.08 × 1,192.32
  4. Step 4: Simplify right side
    1,205.28x = 1,997,231.39
  5. Step 5: Solve for x
    x = 1,997,231.39/1,205.28
  6. Step 6: Final answer
    x = 1,657.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.