Home / 8,320.48-11,479.50-5,489.26

Finding the Fourth Proportional to 8,320.48, 11,479.50 and 5,489.26

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Solution

The fourth proportional to 8,320.48, 11,479.50 and 5,489.26 is: 7,573.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.48 : 11,479.50 = 5,489.26 : x
  2. Step 2: Convert to fraction form
    8,320.48/11,479.50 = 5,489.26/x
  3. Step 3: Cross multiply
    8,320.48x = 11,479.50 × 5,489.26
  4. Step 4: Simplify right side
    8,320.48x = 63,013,960.17
  5. Step 5: Solve for x
    x = 63,013,960.17/8,320.48
  6. Step 6: Final answer
    x = 7,573.36

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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.