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Finding the Fourth Proportional to 5,808.40, 8,713.40 and 2,521.40

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Solution

The fourth proportional to 5,808.40, 8,713.40 and 2,521.40 is: 3,782.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,808.40 : 8,713.40 = 2,521.40 : x
  2. Step 2: Convert to fraction form
    5,808.40/8,713.40 = 2,521.40/x
  3. Step 3: Cross multiply
    5,808.40x = 8,713.40 × 2,521.40
  4. Step 4: Simplify right side
    5,808.40x = 21,969,966.76
  5. Step 5: Solve for x
    x = 21,969,966.76/5,808.40
  6. Step 6: Final answer
    x = 3,782.45

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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.