Home / 5,318.23-7,977.20-1,620.30

Finding the Fourth Proportional to 5,318.23, 7,977.20 and 1,620.30

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Solution

The fourth proportional to 5,318.23, 7,977.20 and 1,620.30 is: 2,430.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.23 : 7,977.20 = 1,620.30 : x
  2. Step 2: Convert to fraction form
    5,318.23/7,977.20 = 1,620.30/x
  3. Step 3: Cross multiply
    5,318.23x = 7,977.20 × 1,620.30
  4. Step 4: Simplify right side
    5,318.23x = 12,925,457.16
  5. Step 5: Solve for x
    x = 12,925,457.16/5,318.23
  6. Step 6: Final answer
    x = 2,430.41

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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.