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Finding the Fourth Proportional to 28,776.76, 43,162.03 and 7,718.92

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Solution

The fourth proportional to 28,776.76, 43,162.03 and 7,718.92 is: 11,577.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,776.76 : 43,162.03 = 7,718.92 : x
  2. Step 2: Convert to fraction form
    28,776.76/43,162.03 = 7,718.92/x
  3. Step 3: Cross multiply
    28,776.76x = 43,162.03 × 7,718.92
  4. Step 4: Simplify right side
    28,776.76x = 333,164,256.61
  5. Step 5: Solve for x
    x = 333,164,256.61/28,776.76
  6. Step 6: Final answer
    x = 11,577.55

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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.