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Finding the Fourth Proportional to 5,518.68, 7,615.68 and 3,000.84

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Solution

The fourth proportional to 5,518.68, 7,615.68 and 3,000.84 is: 4,141.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.68 : 7,615.68 = 3,000.84 : x
  2. Step 2: Convert to fraction form
    5,518.68/7,615.68 = 3,000.84/x
  3. Step 3: Cross multiply
    5,518.68x = 7,615.68 × 3,000.84
  4. Step 4: Simplify right side
    5,518.68x = 22,853,437.17
  5. Step 5: Solve for x
    x = 22,853,437.17/5,518.68
  6. Step 6: Final answer
    x = 4,141.11

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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.