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Finding the Fourth Proportional to 7,015.98, 9,679.79 and 4,658.59

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Solution

The fourth proportional to 7,015.98, 9,679.79 and 4,658.59 is: 6,427.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,015.98 : 9,679.79 = 4,658.59 : x
  2. Step 2: Convert to fraction form
    7,015.98/9,679.79 = 4,658.59/x
  3. Step 3: Cross multiply
    7,015.98x = 9,679.79 × 4,658.59
  4. Step 4: Simplify right side
    7,015.98x = 45,094,160.34
  5. Step 5: Solve for x
    x = 45,094,160.34/7,015.98
  6. Step 6: Final answer
    x = 6,427.35

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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.