Home / 8,065.92-11,116.80-7,841.28

Finding the Fourth Proportional to 8,065.92, 11,116.80 and 7,841.28

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Solution

The fourth proportional to 8,065.92, 11,116.80 and 7,841.28 is: 10,807.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,065.92 : 11,116.80 = 7,841.28 : x
  2. Step 2: Convert to fraction form
    8,065.92/11,116.80 = 7,841.28/x
  3. Step 3: Cross multiply
    8,065.92x = 11,116.80 × 7,841.28
  4. Step 4: Simplify right side
    8,065.92x = 87,169,941.50
  5. Step 5: Solve for x
    x = 87,169,941.50/8,065.92
  6. Step 6: Final answer
    x = 10,807.19

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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.