Home / 2,685.10-3,707.18-2,188.92

Finding the Fourth Proportional to 2,685.10, 3,707.18 and 2,188.92

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Solution

The fourth proportional to 2,685.10, 3,707.18 and 2,188.92 is: 3,022.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.10 : 3,707.18 = 2,188.92 : x
  2. Step 2: Convert to fraction form
    2,685.10/3,707.18 = 2,188.92/x
  3. Step 3: Cross multiply
    2,685.10x = 3,707.18 × 2,188.92
  4. Step 4: Simplify right side
    2,685.10x = 8,114,720.45
  5. Step 5: Solve for x
    x = 8,114,720.45/2,685.10
  6. Step 6: Final answer
    x = 3,022.13

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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.