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Finding the Fourth Proportional to 6,945.76, 9,573.76 and 4,287.36

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Solution

The fourth proportional to 6,945.76, 9,573.76 and 4,287.36 is: 5,909.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,945.76 : 9,573.76 = 4,287.36 : x
  2. Step 2: Convert to fraction form
    6,945.76/9,573.76 = 4,287.36/x
  3. Step 3: Cross multiply
    6,945.76x = 9,573.76 × 4,287.36
  4. Step 4: Simplify right side
    6,945.76x = 41,046,155.67
  5. Step 5: Solve for x
    x = 41,046,155.67/6,945.76
  6. Step 6: Final answer
    x = 5,909.53

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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.