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Finding the Fourth Proportional to 9,425.93, 12,999.11 and 6,405.58

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Solution

The fourth proportional to 9,425.93, 12,999.11 and 6,405.58 is: 8,833.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,425.93 : 12,999.11 = 6,405.58 : x
  2. Step 2: Convert to fraction form
    9,425.93/12,999.11 = 6,405.58/x
  3. Step 3: Cross multiply
    9,425.93x = 12,999.11 × 6,405.58
  4. Step 4: Simplify right side
    9,425.93x = 83,266,774.51
  5. Step 5: Solve for x
    x = 83,266,774.51/9,425.93
  6. Step 6: Final answer
    x = 8,833.80

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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.