Home / 5,228.28-7,214.94-2,870.64

Finding the Fourth Proportional to 5,228.28, 7,214.94 and 2,870.64

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Solution

The fourth proportional to 5,228.28, 7,214.94 and 2,870.64 is: 3,961.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.28 : 7,214.94 = 2,870.64 : x
  2. Step 2: Convert to fraction form
    5,228.28/7,214.94 = 2,870.64/x
  3. Step 3: Cross multiply
    5,228.28x = 7,214.94 × 2,870.64
  4. Step 4: Simplify right side
    5,228.28x = 20,711,495.36
  5. Step 5: Solve for x
    x = 20,711,495.36/5,228.28
  6. Step 6: Final answer
    x = 3,961.44

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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.