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Finding the Fourth Proportional to 5,777.80, 8,666.68 and 1,617.80

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Solution

The fourth proportional to 5,777.80, 8,666.68 and 1,617.80 is: 2,426.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,777.80 : 8,666.68 = 1,617.80 : x
  2. Step 2: Convert to fraction form
    5,777.80/8,666.68 = 1,617.80/x
  3. Step 3: Cross multiply
    5,777.80x = 8,666.68 × 1,617.80
  4. Step 4: Simplify right side
    5,777.80x = 14,020,954.90
  5. Step 5: Solve for x
    x = 14,020,954.90/5,777.80
  6. Step 6: Final answer
    x = 2,426.69

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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.