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Finding the Fourth Proportional to 2,710.89, 4,066.35 and 658.89

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Solution

The fourth proportional to 2,710.89, 4,066.35 and 658.89 is: 988.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,710.89 : 4,066.35 = 658.89 : x
  2. Step 2: Convert to fraction form
    2,710.89/4,066.35 = 658.89/x
  3. Step 3: Cross multiply
    2,710.89x = 4,066.35 × 658.89
  4. Step 4: Simplify right side
    2,710.89x = 2,679,277.35
  5. Step 5: Solve for x
    x = 2,679,277.35/2,710.89
  6. Step 6: Final answer
    x = 988.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.