Home / 9,171.20-12,653.36-5,393.16

Finding the Fourth Proportional to 9,171.20, 12,653.36 and 5,393.16

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Solution

The fourth proportional to 9,171.20, 12,653.36 and 5,393.16 is: 7,440.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,171.20 : 12,653.36 = 5,393.16 : x
  2. Step 2: Convert to fraction form
    9,171.20/12,653.36 = 5,393.16/x
  3. Step 3: Cross multiply
    9,171.20x = 12,653.36 × 5,393.16
  4. Step 4: Simplify right side
    9,171.20x = 68,241,595.02
  5. Step 5: Solve for x
    x = 68,241,595.02/9,171.20
  6. Step 6: Final answer
    x = 7,440.86

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Half scale
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Double scale
Find fourth proportional to 9,172.20, 12,654.74 and 5,394.16
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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.