Home / 3,855.84-5,784.66-1,258.80

Finding the Fourth Proportional to 3,855.84, 5,784.66 and 1,258.80

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Solution

The fourth proportional to 3,855.84, 5,784.66 and 1,258.80 is: 1,888.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.84 : 5,784.66 = 1,258.80 : x
  2. Step 2: Convert to fraction form
    3,855.84/5,784.66 = 1,258.80/x
  3. Step 3: Cross multiply
    3,855.84x = 5,784.66 × 1,258.80
  4. Step 4: Simplify right side
    3,855.84x = 7,281,730.01
  5. Step 5: Solve for x
    x = 7,281,730.01/3,855.84
  6. Step 6: Final answer
    x = 1,888.49

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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.