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Finding the Fourth Proportional to 9,282.40, 12,809.64 and 5,090.64

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Solution

The fourth proportional to 9,282.40, 12,809.64 and 5,090.64 is: 7,025.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,282.40 : 12,809.64 = 5,090.64 : x
  2. Step 2: Convert to fraction form
    9,282.40/12,809.64 = 5,090.64/x
  3. Step 3: Cross multiply
    9,282.40x = 12,809.64 × 5,090.64
  4. Step 4: Simplify right side
    9,282.40x = 65,209,265.77
  5. Step 5: Solve for x
    x = 65,209,265.77/9,282.40
  6. Step 6: Final answer
    x = 7,025.04

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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.