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Finding the Fourth Proportional to 2,800.34, 4,200.52 and 852.54

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Solution

The fourth proportional to 2,800.34, 4,200.52 and 852.54 is: 1,278.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.34 : 4,200.52 = 852.54 : x
  2. Step 2: Convert to fraction form
    2,800.34/4,200.52 = 852.54/x
  3. Step 3: Cross multiply
    2,800.34x = 4,200.52 × 852.54
  4. Step 4: Simplify right side
    2,800.34x = 3,581,111.32
  5. Step 5: Solve for x
    x = 3,581,111.32/2,800.34
  6. Step 6: Final answer
    x = 1,278.81

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1.5x scale

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.