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Finding the Fourth Proportional to 5,554.24, 7,659.80 and 3,688

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Solution

The fourth proportional to 5,554.24, 7,659.80 and 3,688 is: 5,086.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,554.24 : 7,659.80 = 3,688 : x
  2. Step 2: Convert to fraction form
    5,554.24/7,659.80 = 3,688/x
  3. Step 3: Cross multiply
    5,554.24x = 7,659.80 × 3,688
  4. Step 4: Simplify right side
    5,554.24x = 28,249,342.40
  5. Step 5: Solve for x
    x = 28,249,342.40/5,554.24
  6. Step 6: Final answer
    x = 5,086.09

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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.