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Finding the Fourth Proportional to 7,099.60, 9,798.24 and 3,956.08

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Solution

The fourth proportional to 7,099.60, 9,798.24 and 3,956.08 is: 5,459.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,099.60 : 9,798.24 = 3,956.08 : x
  2. Step 2: Convert to fraction form
    7,099.60/9,798.24 = 3,956.08/x
  3. Step 3: Cross multiply
    7,099.60x = 9,798.24 × 3,956.08
  4. Step 4: Simplify right side
    7,099.60x = 38,762,621.30
  5. Step 5: Solve for x
    x = 38,762,621.30/7,099.60
  6. Step 6: Final answer
    x = 5,459.83

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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.