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Finding the Fourth Proportional to 7,085.44, 9,781.56 and 4,739.92

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Solution

The fourth proportional to 7,085.44, 9,781.56 and 4,739.92 is: 6,543.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,085.44 : 9,781.56 = 4,739.92 : x
  2. Step 2: Convert to fraction form
    7,085.44/9,781.56 = 4,739.92/x
  3. Step 3: Cross multiply
    7,085.44x = 9,781.56 × 4,739.92
  4. Step 4: Simplify right side
    7,085.44x = 46,363,811.88
  5. Step 5: Solve for x
    x = 46,363,811.88/7,085.44
  6. Step 6: Final answer
    x = 6,543.53

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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.