Home / 8,439.89-11,644.20-5,459.49

Finding the Fourth Proportional to 8,439.89, 11,644.20 and 5,459.49

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Solution

The fourth proportional to 8,439.89, 11,644.20 and 5,459.49 is: 7,532.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.89 : 11,644.20 = 5,459.49 : x
  2. Step 2: Convert to fraction form
    8,439.89/11,644.20 = 5,459.49/x
  3. Step 3: Cross multiply
    8,439.89x = 11,644.20 × 5,459.49
  4. Step 4: Simplify right side
    8,439.89x = 63,571,393.46
  5. Step 5: Solve for x
    x = 63,571,393.46/8,439.89
  6. Step 6: Final answer
    x = 7,532.26

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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.