Home / 7,112.66-9,812.29-4,126.76

Finding the Fourth Proportional to 7,112.66, 9,812.29 and 4,126.76

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Solution

The fourth proportional to 7,112.66, 9,812.29 and 4,126.76 is: 5,693.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,112.66 : 9,812.29 = 4,126.76 : x
  2. Step 2: Convert to fraction form
    7,112.66/9,812.29 = 4,126.76/x
  3. Step 3: Cross multiply
    7,112.66x = 9,812.29 × 4,126.76
  4. Step 4: Simplify right side
    7,112.66x = 40,492,965.88
  5. Step 5: Solve for x
    x = 40,492,965.88/7,112.66
  6. Step 6: Final answer
    x = 5,693.08

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Double scale
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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.