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Finding the Fourth Proportional to 8,303.54, 12,402.93 and 6,991.34

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Solution

The fourth proportional to 8,303.54, 12,402.93 and 6,991.34 is: 10,442.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,303.54 : 12,402.93 = 6,991.34 : x
  2. Step 2: Convert to fraction form
    8,303.54/12,402.93 = 6,991.34/x
  3. Step 3: Cross multiply
    8,303.54x = 12,402.93 × 6,991.34
  4. Step 4: Simplify right side
    8,303.54x = 86,713,065.67
  5. Step 5: Solve for x
    x = 86,713,065.67/8,303.54
  6. Step 6: Final answer
    x = 10,442.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.