Home / 5,377.96-7,421.49-2,987.94

Finding the Fourth Proportional to 5,377.96, 7,421.49 and 2,987.94

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Solution

The fourth proportional to 5,377.96, 7,421.49 and 2,987.94 is: 4,123.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,377.96 : 7,421.49 = 2,987.94 : x
  2. Step 2: Convert to fraction form
    5,377.96/7,421.49 = 2,987.94/x
  3. Step 3: Cross multiply
    5,377.96x = 7,421.49 × 2,987.94
  4. Step 4: Simplify right side
    5,377.96x = 22,174,994.66
  5. Step 5: Solve for x
    x = 22,174,994.66/5,377.96
  6. Step 6: Final answer
    x = 4,123.31

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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.