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Finding the Fourth Proportional to 9,339.60, 14,009.40 and 5,653.20

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Solution

The fourth proportional to 9,339.60, 14,009.40 and 5,653.20 is: 8,479.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,339.60 : 14,009.40 = 5,653.20 : x
  2. Step 2: Convert to fraction form
    9,339.60/14,009.40 = 5,653.20/x
  3. Step 3: Cross multiply
    9,339.60x = 14,009.40 × 5,653.20
  4. Step 4: Simplify right side
    9,339.60x = 79,197,940.08
  5. Step 5: Solve for x
    x = 79,197,940.08/9,339.60
  6. Step 6: Final answer
    x = 8,479.80

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Half scale
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Similar ratio
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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.