Home / 6,128.91-9,191.66-1,685.51

Finding the Fourth Proportional to 6,128.91, 9,191.66 and 1,685.51

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Solution

The fourth proportional to 6,128.91, 9,191.66 and 1,685.51 is: 2,527.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,128.91 : 9,191.66 = 1,685.51 : x
  2. Step 2: Convert to fraction form
    6,128.91/9,191.66 = 1,685.51/x
  3. Step 3: Cross multiply
    6,128.91x = 9,191.66 × 1,685.51
  4. Step 4: Simplify right side
    6,128.91x = 15,492,580.46
  5. Step 5: Solve for x
    x = 15,492,580.46/6,128.91
  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.