Home / 8,417.36-11,615.88-4,640.45

Finding the Fourth Proportional to 8,417.36, 11,615.88 and 4,640.45

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Solution

The fourth proportional to 8,417.36, 11,615.88 and 4,640.45 is: 6,403.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,417.36 : 11,615.88 = 4,640.45 : x
  2. Step 2: Convert to fraction form
    8,417.36/11,615.88 = 4,640.45/x
  3. Step 3: Cross multiply
    8,417.36x = 11,615.88 × 4,640.45
  4. Step 4: Simplify right side
    8,417.36x = 53,902,910.35
  5. Step 5: Solve for x
    x = 53,902,910.35/8,417.36
  6. Step 6: Final answer
    x = 6,403.78

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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.