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Finding the Fourth Proportional to 5,636.79, 7,774.56 and 4,999.47

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Solution

The fourth proportional to 5,636.79, 7,774.56 and 4,999.47 is: 6,895.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,636.79 : 7,774.56 = 4,999.47 : x
  2. Step 2: Convert to fraction form
    5,636.79/7,774.56 = 4,999.47/x
  3. Step 3: Cross multiply
    5,636.79x = 7,774.56 × 4,999.47
  4. Step 4: Simplify right side
    5,636.79x = 38,868,679.48
  5. Step 5: Solve for x
    x = 38,868,679.48/5,636.79
  6. Step 6: Final answer
    x = 6,895.53

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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.