Home / 6,420.55-9,631.77-3,460.54

Finding the Fourth Proportional to 6,420.55, 9,631.77 and 3,460.54

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Solution

The fourth proportional to 6,420.55, 9,631.77 and 3,460.54 is: 5,191.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.55 : 9,631.77 = 3,460.54 : x
  2. Step 2: Convert to fraction form
    6,420.55/9,631.77 = 3,460.54/x
  3. Step 3: Cross multiply
    6,420.55x = 9,631.77 × 3,460.54
  4. Step 4: Simplify right side
    6,420.55x = 33,331,125.36
  5. Step 5: Solve for x
    x = 33,331,125.36/6,420.55
  6. Step 6: Final answer
    x = 5,191.32

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1.5x scale

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.