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Finding the Fourth Proportional to 5,764.79, 8,647.08 and 1,869.20

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Solution

The fourth proportional to 5,764.79, 8,647.08 and 1,869.20 is: 2,803.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,764.79 : 8,647.08 = 1,869.20 : x
  2. Step 2: Convert to fraction form
    5,764.79/8,647.08 = 1,869.20/x
  3. Step 3: Cross multiply
    5,764.79x = 8,647.08 × 1,869.20
  4. Step 4: Simplify right side
    5,764.79x = 16,163,078.70
  5. Step 5: Solve for x
    x = 16,163,078.70/5,764.79
  6. Step 6: Final answer
    x = 2,803.76

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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.