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Finding the Fourth Proportional to 6,953.60, 10,431.30 and 3,445.40

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Solution

The fourth proportional to 6,953.60, 10,431.30 and 3,445.40 is: 5,168.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,953.60 : 10,431.30 = 3,445.40 : x
  2. Step 2: Convert to fraction form
    6,953.60/10,431.30 = 3,445.40/x
  3. Step 3: Cross multiply
    6,953.60x = 10,431.30 × 3,445.40
  4. Step 4: Simplify right side
    6,953.60x = 35,940,001.02
  5. Step 5: Solve for x
    x = 35,940,001.02/6,953.60
  6. Step 6: Final answer
    x = 5,168.55

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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.