Home / 6,968.78-9,615.54-3,985.58

Finding the Fourth Proportional to 6,968.78, 9,615.54 and 3,985.58

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Solution

The fourth proportional to 6,968.78, 9,615.54 and 3,985.58 is: 5,499.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,968.78 : 9,615.54 = 3,985.58 : x
  2. Step 2: Convert to fraction form
    6,968.78/9,615.54 = 3,985.58/x
  3. Step 3: Cross multiply
    6,968.78x = 9,615.54 × 3,985.58
  4. Step 4: Simplify right side
    6,968.78x = 38,323,503.91
  5. Step 5: Solve for x
    x = 38,323,503.91/6,968.78
  6. Step 6: Final answer
    x = 5,499.31

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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.