Home / 8,987.27-13,485.08-3,438.78

Finding the Fourth Proportional to 8,987.27, 13,485.08 and 3,438.78

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Solution

The fourth proportional to 8,987.27, 13,485.08 and 3,438.78 is: 5,159.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,987.27 : 13,485.08 = 3,438.78 : x
  2. Step 2: Convert to fraction form
    8,987.27/13,485.08 = 3,438.78/x
  3. Step 3: Cross multiply
    8,987.27x = 13,485.08 × 3,438.78
  4. Step 4: Simplify right side
    8,987.27x = 46,372,223.40
  5. Step 5: Solve for x
    x = 46,372,223.40/8,987.27
  6. Step 6: Final answer
    x = 5,159.77

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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.