Home / 5,430.75-7,494.45-3,072.84

Finding the Fourth Proportional to 5,430.75, 7,494.45 and 3,072.84

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Solution

The fourth proportional to 5,430.75, 7,494.45 and 3,072.84 is: 4,240.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.75 : 7,494.45 = 3,072.84 : x
  2. Step 2: Convert to fraction form
    5,430.75/7,494.45 = 3,072.84/x
  3. Step 3: Cross multiply
    5,430.75x = 7,494.45 × 3,072.84
  4. Step 4: Simplify right side
    5,430.75x = 23,029,245.74
  5. Step 5: Solve for x
    x = 23,029,245.74/5,430.75
  6. Step 6: Final answer
    x = 4,240.53

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Half scale
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Double scale
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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.