Home / 8,928.12-13,392.21-2,688.15

Finding the Fourth Proportional to 8,928.12, 13,392.21 and 2,688.15

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Solution

The fourth proportional to 8,928.12, 13,392.21 and 2,688.15 is: 4,032.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928.12 : 13,392.21 = 2,688.15 : x
  2. Step 2: Convert to fraction form
    8,928.12/13,392.21 = 2,688.15/x
  3. Step 3: Cross multiply
    8,928.12x = 13,392.21 × 2,688.15
  4. Step 4: Simplify right side
    8,928.12x = 36,000,269.31
  5. Step 5: Solve for x
    x = 36,000,269.31/8,928.12
  6. Step 6: Final answer
    x = 4,032.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.