Home / 8,103.36-12,153.20-5,291.30

Finding the Fourth Proportional to 8,103.36, 12,153.20 and 5,291.30

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Solution

The fourth proportional to 8,103.36, 12,153.20 and 5,291.30 is: 7,935.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,103.36 : 12,153.20 = 5,291.30 : x
  2. Step 2: Convert to fraction form
    8,103.36/12,153.20 = 5,291.30/x
  3. Step 3: Cross multiply
    8,103.36x = 12,153.20 × 5,291.30
  4. Step 4: Simplify right side
    8,103.36x = 64,306,227.16
  5. Step 5: Solve for x
    x = 64,306,227.16/8,103.36
  6. Step 6: Final answer
    x = 7,935.75

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1.5x scale

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.