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Finding the Fourth Proportional to 7,158.70, 10,739.76 and 2,996.39

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Solution

The fourth proportional to 7,158.70, 10,739.76 and 2,996.39 is: 4,495.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,158.70 : 10,739.76 = 2,996.39 : x
  2. Step 2: Convert to fraction form
    7,158.70/10,739.76 = 2,996.39/x
  3. Step 3: Cross multiply
    7,158.70x = 10,739.76 × 2,996.39
  4. Step 4: Simplify right side
    7,158.70x = 32,180,509.47
  5. Step 5: Solve for x
    x = 32,180,509.47/7,158.70
  6. Step 6: Final answer
    x = 4,495.30

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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.