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Finding the Fourth Proportional to 7,241.60, 10,862.40 and 2,856.64

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Solution

The fourth proportional to 7,241.60, 10,862.40 and 2,856.64 is: 4,284.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,241.60 : 10,862.40 = 2,856.64 : x
  2. Step 2: Convert to fraction form
    7,241.60/10,862.40 = 2,856.64/x
  3. Step 3: Cross multiply
    7,241.60x = 10,862.40 × 2,856.64
  4. Step 4: Simplify right side
    7,241.60x = 31,029,966.34
  5. Step 5: Solve for x
    x = 31,029,966.34/7,241.60
  6. Step 6: Final answer
    x = 4,284.96

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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.