Home / 8,930.40-12,324.84-6,688.32

Finding the Fourth Proportional to 8,930.40, 12,324.84 and 6,688.32

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Solution

The fourth proportional to 8,930.40, 12,324.84 and 6,688.32 is: 9,230.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,930.40 : 12,324.84 = 6,688.32 : x
  2. Step 2: Convert to fraction form
    8,930.40/12,324.84 = 6,688.32/x
  3. Step 3: Cross multiply
    8,930.40x = 12,324.84 × 6,688.32
  4. Step 4: Simplify right side
    8,930.40x = 82,432,473.87
  5. Step 5: Solve for x
    x = 82,432,473.87/8,930.40
  6. Step 6: Final answer
    x = 9,230.55

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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.