Home / 1,624.46-2,431.11-1,128.53

Finding the Fourth Proportional to 1,624.46, 2,431.11 and 1,128.53

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Solution

The fourth proportional to 1,624.46, 2,431.11 and 1,128.53 is: 1,688.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,624.46 : 2,431.11 = 1,128.53 : x
  2. Step 2: Convert to fraction form
    1,624.46/2,431.11 = 1,128.53/x
  3. Step 3: Cross multiply
    1,624.46x = 2,431.11 × 1,128.53
  4. Step 4: Simplify right side
    1,624.46x = 2,743,590.88
  5. Step 5: Solve for x
    x = 2,743,590.88/1,624.46
  6. Step 6: Final answer
    x = 1,688.93

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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.