Home / 9,389.72-14,086.40-2,815.35

Finding the Fourth Proportional to 9,389.72, 14,086.40 and 2,815.35

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Solution

The fourth proportional to 9,389.72, 14,086.40 and 2,815.35 is: 4,223.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,389.72 : 14,086.40 = 2,815.35 : x
  2. Step 2: Convert to fraction form
    9,389.72/14,086.40 = 2,815.35/x
  3. Step 3: Cross multiply
    9,389.72x = 14,086.40 × 2,815.35
  4. Step 4: Simplify right side
    9,389.72x = 39,658,132.16
  5. Step 5: Solve for x
    x = 39,658,132.16/9,389.72
  6. Step 6: Final answer
    x = 4,223.57

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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.