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Finding the Fourth Proportional to 4,778.76, 7,167.60 and 1,658.22

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Solution

The fourth proportional to 4,778.76, 7,167.60 and 1,658.22 is: 2,487.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.76 : 7,167.60 = 1,658.22 : x
  2. Step 2: Convert to fraction form
    4,778.76/7,167.60 = 1,658.22/x
  3. Step 3: Cross multiply
    4,778.76x = 7,167.60 × 1,658.22
  4. Step 4: Simplify right side
    4,778.76x = 11,885,457.67
  5. Step 5: Solve for x
    x = 11,885,457.67/4,778.76
  6. Step 6: Final answer
    x = 2,487.14

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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.