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Finding the Fourth Proportional to 6,980.60, 9,636.64 and 5,483.72

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Solution

The fourth proportional to 6,980.60, 9,636.64 and 5,483.72 is: 7,570.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,980.60 : 9,636.64 = 5,483.72 : x
  2. Step 2: Convert to fraction form
    6,980.60/9,636.64 = 5,483.72/x
  3. Step 3: Cross multiply
    6,980.60x = 9,636.64 × 5,483.72
  4. Step 4: Simplify right side
    6,980.60x = 52,844,635.50
  5. Step 5: Solve for x
    x = 52,844,635.50/6,980.60
  6. Step 6: Final answer
    x = 7,570.21

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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.