Home / 6,128.90-9,192.14-1,685.42

Finding the Fourth Proportional to 6,128.90, 9,192.14 and 1,685.42

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Solution

The fourth proportional to 6,128.90, 9,192.14 and 1,685.42 is: 2,527.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,128.90 : 9,192.14 = 1,685.42 : x
  2. Step 2: Convert to fraction form
    6,128.90/9,192.14 = 1,685.42/x
  3. Step 3: Cross multiply
    6,128.90x = 9,192.14 × 1,685.42
  4. Step 4: Simplify right side
    6,128.90x = 15,492,562.21
  5. Step 5: Solve for x
    x = 15,492,562.21/6,128.90
  6. Step 6: Final answer
    x = 2,527.79

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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.