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Finding the Fourth Proportional to 7,065.48, 9,749.82 and 4,079.32

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Solution

The fourth proportional to 7,065.48, 9,749.82 and 4,079.32 is: 5,629.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,065.48 : 9,749.82 = 4,079.32 : x
  2. Step 2: Convert to fraction form
    7,065.48/9,749.82 = 4,079.32/x
  3. Step 3: Cross multiply
    7,065.48x = 9,749.82 × 4,079.32
  4. Step 4: Simplify right side
    7,065.48x = 39,772,635.72
  5. Step 5: Solve for x
    x = 39,772,635.72/7,065.48
  6. Step 6: Final answer
    x = 5,629.15

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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.