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Finding the Fourth Proportional to 9,128.99, 13,695.99 and 2,888.83

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Solution

The fourth proportional to 9,128.99, 13,695.99 and 2,888.83 is: 4,334.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.99 : 13,695.99 = 2,888.83 : x
  2. Step 2: Convert to fraction form
    9,128.99/13,695.99 = 2,888.83/x
  3. Step 3: Cross multiply
    9,128.99x = 13,695.99 × 2,888.83
  4. Step 4: Simplify right side
    9,128.99x = 39,565,386.79
  5. Step 5: Solve for x
    x = 39,565,386.79/9,128.99
  6. Step 6: Final answer
    x = 4,334.04

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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.