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Finding the Fourth Proportional to 8,928.32, 12,322.80 and 5,153.93

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Solution

The fourth proportional to 8,928.32, 12,322.80 and 5,153.93 is: 7,113.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928.32 : 12,322.80 = 5,153.93 : x
  2. Step 2: Convert to fraction form
    8,928.32/12,322.80 = 5,153.93/x
  3. Step 3: Cross multiply
    8,928.32x = 12,322.80 × 5,153.93
  4. Step 4: Simplify right side
    8,928.32x = 63,510,786.99
  5. Step 5: Solve for x
    x = 63,510,786.99/8,928.32
  6. Step 6: Final answer
    x = 7,113.41

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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.