Home / 6,633.72-9,154.80-3,980.16

Finding the Fourth Proportional to 6,633.72, 9,154.80 and 3,980.16

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Solution

The fourth proportional to 6,633.72, 9,154.80 and 3,980.16 is: 5,492.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,633.72 : 9,154.80 = 3,980.16 : x
  2. Step 2: Convert to fraction form
    6,633.72/9,154.80 = 3,980.16/x
  3. Step 3: Cross multiply
    6,633.72x = 9,154.80 × 3,980.16
  4. Step 4: Simplify right side
    6,633.72x = 36,437,568.77
  5. Step 5: Solve for x
    x = 36,437,568.77/6,633.72
  6. Step 6: Final answer
    x = 5,492.78

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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.