Home / 4,742.72-6,543.84-2,879.36

Finding the Fourth Proportional to 4,742.72, 6,543.84 and 2,879.36

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Solution

The fourth proportional to 4,742.72, 6,543.84 and 2,879.36 is: 3,972.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,742.72 : 6,543.84 = 2,879.36 : x
  2. Step 2: Convert to fraction form
    4,742.72/6,543.84 = 2,879.36/x
  3. Step 3: Cross multiply
    4,742.72x = 6,543.84 × 2,879.36
  4. Step 4: Simplify right side
    4,742.72x = 18,842,071.14
  5. Step 5: Solve for x
    x = 18,842,071.14/4,742.72
  6. Step 6: Final answer
    x = 3,972.84

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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.