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Finding the Fourth Proportional to 8,930.44, 12,309.73 and 7,038.99

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Solution

The fourth proportional to 8,930.44, 12,309.73 and 7,038.99 is: 9,702.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,930.44 : 12,309.73 = 7,038.99 : x
  2. Step 2: Convert to fraction form
    8,930.44/12,309.73 = 7,038.99/x
  3. Step 3: Cross multiply
    8,930.44x = 12,309.73 × 7,038.99
  4. Step 4: Simplify right side
    8,930.44x = 86,648,066.37
  5. Step 5: Solve for x
    x = 86,648,066.37/8,930.44
  6. Step 6: Final answer
    x = 9,702.55

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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.