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Finding the Fourth Proportional to 7,065.11, 9,749.46 and 4,080.76

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Solution

The fourth proportional to 7,065.11, 9,749.46 and 4,080.76 is: 5,631.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,065.11 : 9,749.46 = 4,080.76 : x
  2. Step 2: Convert to fraction form
    7,065.11/9,749.46 = 4,080.76/x
  3. Step 3: Cross multiply
    7,065.11x = 9,749.46 × 4,080.76
  4. Step 4: Simplify right side
    7,065.11x = 39,785,206.39
  5. Step 5: Solve for x
    x = 39,785,206.39/7,065.11
  6. Step 6: Final answer
    x = 5,631.22

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Half scale
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Double scale
Find fourth proportional to 7,066.11, 9,750.84 and 4,081.76
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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.