Home / 6,421.15-9,631.63-2,038.65

Finding the Fourth Proportional to 6,421.15, 9,631.63 and 2,038.65

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Solution

The fourth proportional to 6,421.15, 9,631.63 and 2,038.65 is: 3,057.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.15 : 9,631.63 = 2,038.65 : x
  2. Step 2: Convert to fraction form
    6,421.15/9,631.63 = 2,038.65/x
  3. Step 3: Cross multiply
    6,421.15x = 9,631.63 × 2,038.65
  4. Step 4: Simplify right side
    6,421.15x = 19,635,522.50
  5. Step 5: Solve for x
    x = 19,635,522.50/6,421.15
  6. Step 6: Final answer
    x = 3,057.94

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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.