Home / 8,069.64-11,138.34-5,680.14

Finding the Fourth Proportional to 8,069.64, 11,138.34 and 5,680.14

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Solution

The fourth proportional to 8,069.64, 11,138.34 and 5,680.14 is: 7,840.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,069.64 : 11,138.34 = 5,680.14 : x
  2. Step 2: Convert to fraction form
    8,069.64/11,138.34 = 5,680.14/x
  3. Step 3: Cross multiply
    8,069.64x = 11,138.34 × 5,680.14
  4. Step 4: Simplify right side
    8,069.64x = 63,267,330.57
  5. Step 5: Solve for x
    x = 63,267,330.57/8,069.64
  6. Step 6: Final answer
    x = 7,840.17

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Half scale
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Double scale
Find fourth proportional to 8,070.64, 11,139.72 and 5,681.14
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.