Home / 4,878.36-6,732.72-2,782.89

Finding the Fourth Proportional to 4,878.36, 6,732.72 and 2,782.89

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Solution

The fourth proportional to 4,878.36, 6,732.72 and 2,782.89 is: 3,840.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.36 : 6,732.72 = 2,782.89 : x
  2. Step 2: Convert to fraction form
    4,878.36/6,732.72 = 2,782.89/x
  3. Step 3: Cross multiply
    4,878.36x = 6,732.72 × 2,782.89
  4. Step 4: Simplify right side
    4,878.36x = 18,736,419.16
  5. Step 5: Solve for x
    x = 18,736,419.16/4,878.36
  6. Step 6: Final answer
    x = 3,840.72

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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.