Home / 6,628.55-9,148.10-3,976.20

Finding the Fourth Proportional to 6,628.55, 9,148.10 and 3,976.20

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Solution

The fourth proportional to 6,628.55, 9,148.10 and 3,976.20 is: 5,487.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,628.55 : 9,148.10 = 3,976.20 : x
  2. Step 2: Convert to fraction form
    6,628.55/9,148.10 = 3,976.20/x
  3. Step 3: Cross multiply
    6,628.55x = 9,148.10 × 3,976.20
  4. Step 4: Simplify right side
    6,628.55x = 36,374,655.34
  5. Step 5: Solve for x
    x = 36,374,655.34/6,628.55
  6. Step 6: Final answer
    x = 5,487.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.