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Finding the Fourth Proportional to 7,148.71, 9,865.25 and 4,166.59

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Solution

The fourth proportional to 7,148.71, 9,865.25 and 4,166.59 is: 5,749.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,148.71 : 9,865.25 = 4,166.59 : x
  2. Step 2: Convert to fraction form
    7,148.71/9,865.25 = 4,166.59/x
  3. Step 3: Cross multiply
    7,148.71x = 9,865.25 × 4,166.59
  4. Step 4: Simplify right side
    7,148.71x = 41,104,452.00
  5. Step 5: Solve for x
    x = 41,104,452.00/7,148.71
  6. Step 6: Final answer
    x = 5,749.91

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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.