Home / 3,852.80-5,316.48-2,280.80

Finding the Fourth Proportional to 3,852.80, 5,316.48 and 2,280.80

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Solution

The fourth proportional to 3,852.80, 5,316.48 and 2,280.80 is: 3,147.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,852.80 : 5,316.48 = 2,280.80 : x
  2. Step 2: Convert to fraction form
    3,852.80/5,316.48 = 2,280.80/x
  3. Step 3: Cross multiply
    3,852.80x = 5,316.48 × 2,280.80
  4. Step 4: Simplify right side
    3,852.80x = 12,125,827.58
  5. Step 5: Solve for x
    x = 12,125,827.58/3,852.80
  6. Step 6: Final answer
    x = 3,147.28

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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.