Home / 6,420.06-9,630.09-2,721.60

Finding the Fourth Proportional to 6,420.06, 9,630.09 and 2,721.60

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Solution

The fourth proportional to 6,420.06, 9,630.09 and 2,721.60 is: 4,082.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.06 : 9,630.09 = 2,721.60 : x
  2. Step 2: Convert to fraction form
    6,420.06/9,630.09 = 2,721.60/x
  3. Step 3: Cross multiply
    6,420.06x = 9,630.09 × 2,721.60
  4. Step 4: Simplify right side
    6,420.06x = 26,209,252.94
  5. Step 5: Solve for x
    x = 26,209,252.94/6,420.06
  6. Step 6: Final answer
    x = 4,082.40

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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.