Home / 8,513.90-12,758.36-4,291.38

Finding the Fourth Proportional to 8,513.90, 12,758.36 and 4,291.38

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Solution

The fourth proportional to 8,513.90, 12,758.36 and 4,291.38 is: 6,430.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,513.90 : 12,758.36 = 4,291.38 : x
  2. Step 2: Convert to fraction form
    8,513.90/12,758.36 = 4,291.38/x
  3. Step 3: Cross multiply
    8,513.90x = 12,758.36 × 4,291.38
  4. Step 4: Simplify right side
    8,513.90x = 54,750,970.94
  5. Step 5: Solve for x
    x = 54,750,970.94/8,513.90
  6. Step 6: Final answer
    x = 6,430.77

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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.