Home / 5,248.40-7,242.90-2,890.58

Finding the Fourth Proportional to 5,248.40, 7,242.90 and 2,890.58

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Solution

The fourth proportional to 5,248.40, 7,242.90 and 2,890.58 is: 3,989.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,248.40 : 7,242.90 = 2,890.58 : x
  2. Step 2: Convert to fraction form
    5,248.40/7,242.90 = 2,890.58/x
  3. Step 3: Cross multiply
    5,248.40x = 7,242.90 × 2,890.58
  4. Step 4: Simplify right side
    5,248.40x = 20,936,181.88
  5. Step 5: Solve for x
    x = 20,936,181.88/5,248.40
  6. Step 6: Final answer
    x = 3,989.06

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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.