Home / 9,194.42-12,688.56-5,215.40

Finding the Fourth Proportional to 9,194.42, 12,688.56 and 5,215.40

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Solution

The fourth proportional to 9,194.42, 12,688.56 and 5,215.40 is: 7,197.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,194.42 : 12,688.56 = 5,215.40 : x
  2. Step 2: Convert to fraction form
    9,194.42/12,688.56 = 5,215.40/x
  3. Step 3: Cross multiply
    9,194.42x = 12,688.56 × 5,215.40
  4. Step 4: Simplify right side
    9,194.42x = 66,175,852.38
  5. Step 5: Solve for x
    x = 66,175,852.38/9,194.42
  6. Step 6: Final answer
    x = 7,197.40

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.