Home / 9,338.64-12,887.80-5,146.88

Finding the Fourth Proportional to 9,338.64, 12,887.80 and 5,146.88

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Solution

The fourth proportional to 9,338.64, 12,887.80 and 5,146.88 is: 7,102.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,338.64 : 12,887.80 = 5,146.88 : x
  2. Step 2: Convert to fraction form
    9,338.64/12,887.80 = 5,146.88/x
  3. Step 3: Cross multiply
    9,338.64x = 12,887.80 × 5,146.88
  4. Step 4: Simplify right side
    9,338.64x = 66,331,960.06
  5. Step 5: Solve for x
    x = 66,331,960.06/9,338.64
  6. Step 6: Final answer
    x = 7,102.96

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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.