Home / 3,688.80-5,532.52-1,091.12

Finding the Fourth Proportional to 3,688.80, 5,532.52 and 1,091.12

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Solution

The fourth proportional to 3,688.80, 5,532.52 and 1,091.12 is: 1,636.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.80 : 5,532.52 = 1,091.12 : x
  2. Step 2: Convert to fraction form
    3,688.80/5,532.52 = 1,091.12/x
  3. Step 3: Cross multiply
    3,688.80x = 5,532.52 × 1,091.12
  4. Step 4: Simplify right side
    3,688.80x = 6,036,643.22
  5. Step 5: Solve for x
    x = 6,036,643.22/3,688.80
  6. Step 6: Final answer
    x = 1,636.48

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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.