Home / 9,189.45-12,681.57-6,885.76

Finding the Fourth Proportional to 9,189.45, 12,681.57 and 6,885.76

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Solution

The fourth proportional to 9,189.45, 12,681.57 and 6,885.76 is: 9,502.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,189.45 : 12,681.57 = 6,885.76 : x
  2. Step 2: Convert to fraction form
    9,189.45/12,681.57 = 6,885.76/x
  3. Step 3: Cross multiply
    9,189.45x = 12,681.57 × 6,885.76
  4. Step 4: Simplify right side
    9,189.45x = 87,322,247.44
  5. Step 5: Solve for x
    x = 87,322,247.44/9,189.45
  6. Step 6: Final answer
    x = 9,502.45

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Half scale
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Double scale
Find fourth proportional to 9,190.45, 12,682.95 and 6,886.76
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.