Home / 11,583.81-15,985.64-6,278.71

Finding the Fourth Proportional to 11,583.81, 15,985.64 and 6,278.71

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Solution

The fourth proportional to 11,583.81, 15,985.64 and 6,278.71 is: 8,664.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,583.81 : 15,985.64 = 6,278.71 : x
  2. Step 2: Convert to fraction form
    11,583.81/15,985.64 = 6,278.71/x
  3. Step 3: Cross multiply
    11,583.81x = 15,985.64 × 6,278.71
  4. Step 4: Simplify right side
    11,583.81x = 100,369,166.33
  5. Step 5: Solve for x
    x = 100,369,166.33/11,583.81
  6. Step 6: Final answer
    x = 8,664.61

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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.