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Finding the Fourth Proportional to 9,128.93, 13,693.22 and 2,555.01

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Solution

The fourth proportional to 9,128.93, 13,693.22 and 2,555.01 is: 3,832.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.93 : 13,693.22 = 2,555.01 : x
  2. Step 2: Convert to fraction form
    9,128.93/13,693.22 = 2,555.01/x
  3. Step 3: Cross multiply
    9,128.93x = 13,693.22 × 2,555.01
  4. Step 4: Simplify right side
    9,128.93x = 34,986,320.42
  5. Step 5: Solve for x
    x = 34,986,320.42/9,128.93
  6. Step 6: Final answer
    x = 3,832.47

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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.