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Finding the Fourth Proportional to 9,090.40, 13,619.40 and 8,548.24

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Solution

The fourth proportional to 9,090.40, 13,619.40 and 8,548.24 is: 12,807.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,090.40 : 13,619.40 = 8,548.24 : x
  2. Step 2: Convert to fraction form
    9,090.40/13,619.40 = 8,548.24/x
  3. Step 3: Cross multiply
    9,090.40x = 13,619.40 × 8,548.24
  4. Step 4: Simplify right side
    9,090.40x = 116,421,899.86
  5. Step 5: Solve for x
    x = 116,421,899.86/9,090.40
  6. Step 6: Final answer
    x = 12,807.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.