Home / 3,746.80-5,618.48-1,280.96

Finding the Fourth Proportional to 3,746.80, 5,618.48 and 1,280.96

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Solution

The fourth proportional to 3,746.80, 5,618.48 and 1,280.96 is: 1,920.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,746.80 : 5,618.48 = 1,280.96 : x
  2. Step 2: Convert to fraction form
    3,746.80/5,618.48 = 1,280.96/x
  3. Step 3: Cross multiply
    3,746.80x = 5,618.48 × 1,280.96
  4. Step 4: Simplify right side
    3,746.80x = 7,197,048.14
  5. Step 5: Solve for x
    x = 7,197,048.14/3,746.80
  6. Step 6: Final answer
    x = 1,920.85

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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.