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Finding the Fourth Proportional to 7,670.40, 10,560.88 and 6,969.68

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Solution

The fourth proportional to 7,670.40, 10,560.88 and 6,969.68 is: 9,596.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,670.40 : 10,560.88 = 6,969.68 : x
  2. Step 2: Convert to fraction form
    7,670.40/10,560.88 = 6,969.68/x
  3. Step 3: Cross multiply
    7,670.40x = 10,560.88 × 6,969.68
  4. Step 4: Simplify right side
    7,670.40x = 73,605,954.12
  5. Step 5: Solve for x
    x = 73,605,954.12/7,670.40
  6. Step 6: Final answer
    x = 9,596.10

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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.