Home / 8,279.77-11,420.40-6,913.27

Finding the Fourth Proportional to 8,279.77, 11,420.40 and 6,913.27

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Solution

The fourth proportional to 8,279.77, 11,420.40 and 6,913.27 is: 9,535.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.77 : 11,420.40 = 6,913.27 : x
  2. Step 2: Convert to fraction form
    8,279.77/11,420.40 = 6,913.27/x
  3. Step 3: Cross multiply
    8,279.77x = 11,420.40 × 6,913.27
  4. Step 4: Simplify right side
    8,279.77x = 78,952,308.71
  5. Step 5: Solve for x
    x = 78,952,308.71/8,279.77
  6. Step 6: Final answer
    x = 9,535.57

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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.