Home / 7,065.20-9,749.59-3,921.19

Finding the Fourth Proportional to 7,065.20, 9,749.59 and 3,921.19

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Solution

The fourth proportional to 7,065.20, 9,749.59 and 3,921.19 is: 5,411.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,065.20 : 9,749.59 = 3,921.19 : x
  2. Step 2: Convert to fraction form
    7,065.20/9,749.59 = 3,921.19/x
  3. Step 3: Cross multiply
    7,065.20x = 9,749.59 × 3,921.19
  4. Step 4: Simplify right side
    7,065.20x = 38,229,960.64
  5. Step 5: Solve for x
    x = 38,229,960.64/7,065.20
  6. Step 6: Final answer
    x = 5,411.02

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Half 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.