Home / 5,248.35-7,242.69-2,890.49

Finding the Fourth Proportional to 5,248.35, 7,242.69 and 2,890.49

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Solution

The fourth proportional to 5,248.35, 7,242.69 and 2,890.49 is: 3,988.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,248.35 : 7,242.69 = 2,890.49 : x
  2. Step 2: Convert to fraction form
    5,248.35/7,242.69 = 2,890.49/x
  3. Step 3: Cross multiply
    5,248.35x = 7,242.69 × 2,890.49
  4. Step 4: Simplify right side
    5,248.35x = 20,934,886.80
  5. Step 5: Solve for x
    x = 20,934,886.80/5,248.35
  6. Step 6: Final answer
    x = 3,988.85

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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.