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Finding the Fourth Proportional to 5,376.64, 8,066.08 and 1,678.72

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Solution

The fourth proportional to 5,376.64, 8,066.08 and 1,678.72 is: 2,518.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,376.64 : 8,066.08 = 1,678.72 : x
  2. Step 2: Convert to fraction form
    5,376.64/8,066.08 = 1,678.72/x
  3. Step 3: Cross multiply
    5,376.64x = 8,066.08 × 1,678.72
  4. Step 4: Simplify right side
    5,376.64x = 13,540,689.82
  5. Step 5: Solve for x
    x = 13,540,689.82/5,376.64
  6. Step 6: Final answer
    x = 2,518.43

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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.