Home / 6,420.85-9,631.62-2,038.65

Finding the Fourth Proportional to 6,420.85, 9,631.62 and 2,038.65

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Solution

The fourth proportional to 6,420.85, 9,631.62 and 2,038.65 is: 3,058.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.85 : 9,631.62 = 2,038.65 : x
  2. Step 2: Convert to fraction form
    6,420.85/9,631.62 = 2,038.65/x
  3. Step 3: Cross multiply
    6,420.85x = 9,631.62 × 2,038.65
  4. Step 4: Simplify right side
    6,420.85x = 19,635,502.11
  5. Step 5: Solve for x
    x = 19,635,502.11/6,420.85
  6. Step 6: Final answer
    x = 3,058.08

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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.