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Finding the Fourth Proportional to 5,607.96, 7,739.88 and 4,279.14

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Solution

The fourth proportional to 5,607.96, 7,739.88 and 4,279.14 is: 5,905.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,607.96 : 7,739.88 = 4,279.14 : x
  2. Step 2: Convert to fraction form
    5,607.96/7,739.88 = 4,279.14/x
  3. Step 3: Cross multiply
    5,607.96x = 7,739.88 × 4,279.14
  4. Step 4: Simplify right side
    5,607.96x = 33,120,030.10
  5. Step 5: Solve for x
    x = 33,120,030.10/5,607.96
  6. Step 6: Final answer
    x = 5,905.90

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Double 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.