Home / 6,420.52-9,631.90-2,038.12

Finding the Fourth Proportional to 6,420.52, 9,631.90 and 2,038.12

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Solution

The fourth proportional to 6,420.52, 9,631.90 and 2,038.12 is: 3,057.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.52 : 9,631.90 = 2,038.12 : x
  2. Step 2: Convert to fraction form
    6,420.52/9,631.90 = 2,038.12/x
  3. Step 3: Cross multiply
    6,420.52x = 9,631.90 × 2,038.12
  4. Step 4: Simplify right side
    6,420.52x = 19,630,968.03
  5. Step 5: Solve for x
    x = 19,630,968.03/6,420.52
  6. Step 6: Final answer
    x = 3,057.54

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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.