Home / 3,655.42-5,031.81-3,188.86

Finding the Fourth Proportional to 3,655.42, 5,031.81 and 3,188.86

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Solution

The fourth proportional to 3,655.42, 5,031.81 and 3,188.86 is: 4,389.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,655.42 : 5,031.81 = 3,188.86 : x
  2. Step 2: Convert to fraction form
    3,655.42/5,031.81 = 3,188.86/x
  3. Step 3: Cross multiply
    3,655.42x = 5,031.81 × 3,188.86
  4. Step 4: Simplify right side
    3,655.42x = 16,045,737.64
  5. Step 5: Solve for x
    x = 16,045,737.64/3,655.42
  6. Step 6: Final answer
    x = 4,389.57

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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.