Home / 8,455.17-11,665.29-4,915.47

Finding the Fourth Proportional to 8,455.17, 11,665.29 and 4,915.47

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Solution

The fourth proportional to 8,455.17, 11,665.29 and 4,915.47 is: 6,781.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.17 : 11,665.29 = 4,915.47 : x
  2. Step 2: Convert to fraction form
    8,455.17/11,665.29 = 4,915.47/x
  3. Step 3: Cross multiply
    8,455.17x = 11,665.29 × 4,915.47
  4. Step 4: Simplify right side
    8,455.17x = 57,340,383.04
  5. Step 5: Solve for x
    x = 57,340,383.04/8,455.17
  6. Step 6: Final answer
    x = 6,781.69

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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.