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Finding the Fourth Proportional to 5,312.90, 8,000.24 and 3,935.99

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Solution

The fourth proportional to 5,312.90, 8,000.24 and 3,935.99 is: 5,926.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,312.90 : 8,000.24 = 3,935.99 : x
  2. Step 2: Convert to fraction form
    5,312.90/8,000.24 = 3,935.99/x
  3. Step 3: Cross multiply
    5,312.90x = 8,000.24 × 3,935.99
  4. Step 4: Simplify right side
    5,312.90x = 31,488,864.64
  5. Step 5: Solve for x
    x = 31,488,864.64/5,312.90
  6. Step 6: Final answer
    x = 5,926.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.