Home / 3,909.28-5,864.80-1,136.08

Finding the Fourth Proportional to 3,909.28, 5,864.80 and 1,136.08

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Solution

The fourth proportional to 3,909.28, 5,864.80 and 1,136.08 is: 1,704.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,909.28 : 5,864.80 = 1,136.08 : x
  2. Step 2: Convert to fraction form
    3,909.28/5,864.80 = 1,136.08/x
  3. Step 3: Cross multiply
    3,909.28x = 5,864.80 × 1,136.08
  4. Step 4: Simplify right side
    3,909.28x = 6,662,881.98
  5. Step 5: Solve for x
    x = 6,662,881.98/3,909.28
  6. Step 6: Final answer
    x = 1,704.38

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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.