Home / 5,248.42-7,242.91-2,890.54

Finding the Fourth Proportional to 5,248.42, 7,242.91 and 2,890.54

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Solution

The fourth proportional to 5,248.42, 7,242.91 and 2,890.54 is: 3,988.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,248.42 : 7,242.91 = 2,890.54 : x
  2. Step 2: Convert to fraction form
    5,248.42/7,242.91 = 2,890.54/x
  3. Step 3: Cross multiply
    5,248.42x = 7,242.91 × 2,890.54
  4. Step 4: Simplify right side
    5,248.42x = 20,935,921.07
  5. Step 5: Solve for x
    x = 20,935,921.07/5,248.42
  6. Step 6: Final answer
    x = 3,988.99

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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.