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Finding the Fourth Proportional to 5,299.43, 7,311.74 and 3,312.01

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Solution

The fourth proportional to 5,299.43, 7,311.74 and 3,312.01 is: 4,569.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,299.43 : 7,311.74 = 3,312.01 : x
  2. Step 2: Convert to fraction form
    5,299.43/7,311.74 = 3,312.01/x
  3. Step 3: Cross multiply
    5,299.43x = 7,311.74 × 3,312.01
  4. Step 4: Simplify right side
    5,299.43x = 24,216,521.16
  5. Step 5: Solve for x
    x = 24,216,521.16/5,299.43
  6. Step 6: Final answer
    x = 4,569.64

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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.