Home / 2,987.40-4,474.26-2,698.68

Finding the Fourth Proportional to 2,987.40, 4,474.26 and 2,698.68

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Solution

The fourth proportional to 2,987.40, 4,474.26 and 2,698.68 is: 4,041.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.40 : 4,474.26 = 2,698.68 : x
  2. Step 2: Convert to fraction form
    2,987.40/4,474.26 = 2,698.68/x
  3. Step 3: Cross multiply
    2,987.40x = 4,474.26 × 2,698.68
  4. Step 4: Simplify right side
    2,987.40x = 12,074,595.98
  5. Step 5: Solve for x
    x = 12,074,595.98/2,987.40
  6. Step 6: Final answer
    x = 4,041.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.