Home / 8,447.02-12,688.80-5,162.11

Finding the Fourth Proportional to 8,447.02, 12,688.80 and 5,162.11

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Solution

The fourth proportional to 8,447.02, 12,688.80 and 5,162.11 is: 7,754.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,447.02 : 12,688.80 = 5,162.11 : x
  2. Step 2: Convert to fraction form
    8,447.02/12,688.80 = 5,162.11/x
  3. Step 3: Cross multiply
    8,447.02x = 12,688.80 × 5,162.11
  4. Step 4: Simplify right side
    8,447.02x = 65,500,981.37
  5. Step 5: Solve for x
    x = 65,500,981.37/8,447.02
  6. Step 6: Final answer
    x = 7,754.33

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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.