Home / 2,685.86-3,703.68-2,125.42

Finding the Fourth Proportional to 2,685.86, 3,703.68 and 2,125.42

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Solution

The fourth proportional to 2,685.86, 3,703.68 and 2,125.42 is: 2,930.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.86 : 3,703.68 = 2,125.42 : x
  2. Step 2: Convert to fraction form
    2,685.86/3,703.68 = 2,125.42/x
  3. Step 3: Cross multiply
    2,685.86x = 3,703.68 × 2,125.42
  4. Step 4: Simplify right side
    2,685.86x = 7,871,875.55
  5. Step 5: Solve for x
    x = 7,871,875.55/2,685.86
  6. Step 6: Final answer
    x = 2,930.86

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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.