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Finding the Fourth Proportional to 28,312.56, 42,468.86 and 7,252.68

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Solution

The fourth proportional to 28,312.56, 42,468.86 and 7,252.68 is: 10,879.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,312.56 : 42,468.86 = 7,252.68 : x
  2. Step 2: Convert to fraction form
    28,312.56/42,468.86 = 7,252.68/x
  3. Step 3: Cross multiply
    28,312.56x = 42,468.86 × 7,252.68
  4. Step 4: Simplify right side
    28,312.56x = 308,013,051.54
  5. Step 5: Solve for x
    x = 308,013,051.54/28,312.56
  6. Step 6: Final answer
    x = 10,879.03

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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.