Home / 8,278.36-11,423.20-4,742.28

Finding the Fourth Proportional to 8,278.36, 11,423.20 and 4,742.28

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Solution

The fourth proportional to 8,278.36, 11,423.20 and 4,742.28 is: 6,543.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.36 : 11,423.20 = 4,742.28 : x
  2. Step 2: Convert to fraction form
    8,278.36/11,423.20 = 4,742.28/x
  3. Step 3: Cross multiply
    8,278.36x = 11,423.20 × 4,742.28
  4. Step 4: Simplify right side
    8,278.36x = 54,172,012.90
  5. Step 5: Solve for x
    x = 54,172,012.90/8,278.36
  6. Step 6: Final answer
    x = 6,543.81

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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.