Home / 6,420.13-9,628.28-2,722.30

Finding the Fourth Proportional to 6,420.13, 9,628.28 and 2,722.30

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Solution

The fourth proportional to 6,420.13, 9,628.28 and 2,722.30 is: 4,082.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.13 : 9,628.28 = 2,722.30 : x
  2. Step 2: Convert to fraction form
    6,420.13/9,628.28 = 2,722.30/x
  3. Step 3: Cross multiply
    6,420.13x = 9,628.28 × 2,722.30
  4. Step 4: Simplify right side
    6,420.13x = 26,211,039.17
  5. Step 5: Solve for x
    x = 26,211,039.17/6,420.13
  6. Step 6: Final answer
    x = 4,082.64

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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.