Home / 9,107.24-12,567.76-5,128.11

Finding the Fourth Proportional to 9,107.24, 12,567.76 and 5,128.11

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Solution

The fourth proportional to 9,107.24, 12,567.76 and 5,128.11 is: 7,076.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,107.24 : 12,567.76 = 5,128.11 : x
  2. Step 2: Convert to fraction form
    9,107.24/12,567.76 = 5,128.11/x
  3. Step 3: Cross multiply
    9,107.24x = 12,567.76 × 5,128.11
  4. Step 4: Simplify right side
    9,107.24x = 64,448,842.91
  5. Step 5: Solve for x
    x = 64,448,842.91/9,107.24
  6. Step 6: Final answer
    x = 7,076.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.