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Finding the Fourth Proportional to 7,315.79, 10,091.99 and 4,658.58

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Solution

The fourth proportional to 7,315.79, 10,091.99 and 4,658.58 is: 6,426.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,315.79 : 10,091.99 = 4,658.58 : x
  2. Step 2: Convert to fraction form
    7,315.79/10,091.99 = 4,658.58/x
  3. Step 3: Cross multiply
    7,315.79x = 10,091.99 × 4,658.58
  4. Step 4: Simplify right side
    7,315.79x = 47,014,354.42
  5. Step 5: Solve for x
    x = 47,014,354.42/7,315.79
  6. Step 6: Final answer
    x = 6,426.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.