Home / 7,639.60-11,457.58-4,309.28

Finding the Fourth Proportional to 7,639.60, 11,457.58 and 4,309.28

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Solution

The fourth proportional to 7,639.60, 11,457.58 and 4,309.28 is: 6,462.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.60 : 11,457.58 = 4,309.28 : x
  2. Step 2: Convert to fraction form
    7,639.60/11,457.58 = 4,309.28/x
  3. Step 3: Cross multiply
    7,639.60x = 11,457.58 × 4,309.28
  4. Step 4: Simplify right side
    7,639.60x = 49,373,920.34
  5. Step 5: Solve for x
    x = 49,373,920.34/7,639.60
  6. Step 6: Final answer
    x = 6,462.89

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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.