Home / 8,680.08-11,972.52-7,240.44

Finding the Fourth Proportional to 8,680.08, 11,972.52 and 7,240.44

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Solution

The fourth proportional to 8,680.08, 11,972.52 and 7,240.44 is: 9,986.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.08 : 11,972.52 = 7,240.44 : x
  2. Step 2: Convert to fraction form
    8,680.08/11,972.52 = 7,240.44/x
  3. Step 3: Cross multiply
    8,680.08x = 11,972.52 × 7,240.44
  4. Step 4: Simplify right side
    8,680.08x = 86,686,312.71
  5. Step 5: Solve for x
    x = 86,686,312.71/8,680.08
  6. Step 6: Final answer
    x = 9,986.81

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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.