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Finding the Fourth Proportional to 6,989.76, 10,484.64 and 6,296.40

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Solution

The fourth proportional to 6,989.76, 10,484.64 and 6,296.40 is: 9,444.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,989.76 : 10,484.64 = 6,296.40 : x
  2. Step 2: Convert to fraction form
    6,989.76/10,484.64 = 6,296.40/x
  3. Step 3: Cross multiply
    6,989.76x = 10,484.64 × 6,296.40
  4. Step 4: Simplify right side
    6,989.76x = 66,015,487.30
  5. Step 5: Solve for x
    x = 66,015,487.30/6,989.76
  6. Step 6: Final answer
    x = 9,444.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.