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Finding the Fourth Proportional to 6,970.76, 9,620.33 and 3,987.03

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Solution

The fourth proportional to 6,970.76, 9,620.33 and 3,987.03 is: 5,502.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,970.76 : 9,620.33 = 3,987.03 : x
  2. Step 2: Convert to fraction form
    6,970.76/9,620.33 = 3,987.03/x
  3. Step 3: Cross multiply
    6,970.76x = 9,620.33 × 3,987.03
  4. Step 4: Simplify right side
    6,970.76x = 38,356,524.38
  5. Step 5: Solve for x
    x = 38,356,524.38/6,970.76
  6. Step 6: Final answer
    x = 5,502.49

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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.