Home / 5,228.18-7,214.94-2,870.42

Finding the Fourth Proportional to 5,228.18, 7,214.94 and 2,870.42

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Solution

The fourth proportional to 5,228.18, 7,214.94 and 2,870.42 is: 3,961.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.18 : 7,214.94 = 2,870.42 : x
  2. Step 2: Convert to fraction form
    5,228.18/7,214.94 = 2,870.42/x
  3. Step 3: Cross multiply
    5,228.18x = 7,214.94 × 2,870.42
  4. Step 4: Simplify right side
    5,228.18x = 20,709,908.07
  5. Step 5: Solve for x
    x = 20,709,908.07/5,228.18
  6. Step 6: Final answer
    x = 3,961.21

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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.