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Finding the Fourth Proportional to 3,051.76, 4,212.50 and 1,856.76

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Solution

The fourth proportional to 3,051.76, 4,212.50 and 1,856.76 is: 2,562.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,051.76 : 4,212.50 = 1,856.76 : x
  2. Step 2: Convert to fraction form
    3,051.76/4,212.50 = 1,856.76/x
  3. Step 3: Cross multiply
    3,051.76x = 4,212.50 × 1,856.76
  4. Step 4: Simplify right side
    3,051.76x = 7,821,601.50
  5. Step 5: Solve for x
    x = 7,821,601.50/3,051.76
  6. Step 6: Final answer
    x = 2,562.98

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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.