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Finding the Fourth Proportional to 9,858.88, 13,604.80 and 5,382.84

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Solution

The fourth proportional to 9,858.88, 13,604.80 and 5,382.84 is: 7,428.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,858.88 : 13,604.80 = 5,382.84 : x
  2. Step 2: Convert to fraction form
    9,858.88/13,604.80 = 5,382.84/x
  3. Step 3: Cross multiply
    9,858.88x = 13,604.80 × 5,382.84
  4. Step 4: Simplify right side
    9,858.88x = 73,232,461.63
  5. Step 5: Solve for x
    x = 73,232,461.63/9,858.88
  6. Step 6: Final answer
    x = 7,428.07

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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.