Home / 8,308.31-12,519.78-7,528.28

Finding the Fourth Proportional to 8,308.31, 12,519.78 and 7,528.28

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Solution

The fourth proportional to 8,308.31, 12,519.78 and 7,528.28 is: 11,344.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,308.31 : 12,519.78 = 7,528.28 : x
  2. Step 2: Convert to fraction form
    8,308.31/12,519.78 = 7,528.28/x
  3. Step 3: Cross multiply
    8,308.31x = 12,519.78 × 7,528.28
  4. Step 4: Simplify right side
    8,308.31x = 94,252,440.68
  5. Step 5: Solve for x
    x = 94,252,440.68/8,308.31
  6. Step 6: Final answer
    x = 11,344.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.