Home / 3,890.80-5,827.60-3,587.28

Finding the Fourth Proportional to 3,890.80, 5,827.60 and 3,587.28

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Solution

The fourth proportional to 3,890.80, 5,827.60 and 3,587.28 is: 5,372.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.80 : 5,827.60 = 3,587.28 : x
  2. Step 2: Convert to fraction form
    3,890.80/5,827.60 = 3,587.28/x
  3. Step 3: Cross multiply
    3,890.80x = 5,827.60 × 3,587.28
  4. Step 4: Simplify right side
    3,890.80x = 20,905,232.93
  5. Step 5: Solve for x
    x = 20,905,232.93/3,890.80
  6. Step 6: Final answer
    x = 5,372.99

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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.