Home / 4,747.56-7,120.50-1,284

Finding the Fourth Proportional to 4,747.56, 7,120.50 and 1,284

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Solution

The fourth proportional to 4,747.56, 7,120.50 and 1,284 is: 1,925.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,747.56 : 7,120.50 = 1,284 : x
  2. Step 2: Convert to fraction form
    4,747.56/7,120.50 = 1,284/x
  3. Step 3: Cross multiply
    4,747.56x = 7,120.50 × 1,284
  4. Step 4: Simplify right side
    4,747.56x = 9,142,722
  5. Step 5: Solve for x
    x = 9,142,722/4,747.56
  6. Step 6: Final answer
    x = 1,925.77

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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.