Home / 8,128.95-11,217.71-4,543.91

Finding the Fourth Proportional to 8,128.95, 11,217.71 and 4,543.91

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Solution

The fourth proportional to 8,128.95, 11,217.71 and 4,543.91 is: 6,270.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.95 : 11,217.71 = 4,543.91 : x
  2. Step 2: Convert to fraction form
    8,128.95/11,217.71 = 4,543.91/x
  3. Step 3: Cross multiply
    8,128.95x = 11,217.71 × 4,543.91
  4. Step 4: Simplify right side
    8,128.95x = 50,972,264.98
  5. Step 5: Solve for x
    x = 50,972,264.98/8,128.95
  6. Step 6: Final answer
    x = 6,270.46

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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.