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Finding the Fourth Proportional to 5,934.64, 8,190.80 and 5,672.20

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Solution

The fourth proportional to 5,934.64, 8,190.80 and 5,672.20 is: 7,828.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,934.64 : 8,190.80 = 5,672.20 : x
  2. Step 2: Convert to fraction form
    5,934.64/8,190.80 = 5,672.20/x
  3. Step 3: Cross multiply
    5,934.64x = 8,190.80 × 5,672.20
  4. Step 4: Simplify right side
    5,934.64x = 46,459,855.76
  5. Step 5: Solve for x
    x = 46,459,855.76/5,934.64
  6. Step 6: Final answer
    x = 7,828.59

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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.