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Finding the Fourth Proportional to 9,858.40, 13,602 and 5,880.88

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Solution

The fourth proportional to 9,858.40, 13,602 and 5,880.88 is: 8,114.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,858.40 : 13,602 = 5,880.88 : x
  2. Step 2: Convert to fraction form
    9,858.40/13,602 = 5,880.88/x
  3. Step 3: Cross multiply
    9,858.40x = 13,602 × 5,880.88
  4. Step 4: Simplify right side
    9,858.40x = 79,991,729.76
  5. Step 5: Solve for x
    x = 79,991,729.76/9,858.40
  6. Step 6: Final answer
    x = 8,114.07

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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.