Home / 5,345.62-7,376.82-2,987.78

Finding the Fourth Proportional to 5,345.62, 7,376.82 and 2,987.78

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Solution

The fourth proportional to 5,345.62, 7,376.82 and 2,987.78 is: 4,123.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,345.62 : 7,376.82 = 2,987.78 : x
  2. Step 2: Convert to fraction form
    5,345.62/7,376.82 = 2,987.78/x
  3. Step 3: Cross multiply
    5,345.62x = 7,376.82 × 2,987.78
  4. Step 4: Simplify right side
    5,345.62x = 22,040,315.26
  5. Step 5: Solve for x
    x = 22,040,315.26/5,345.62
  6. Step 6: Final answer
    x = 4,123.06

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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.