Home / 8,579.63-11,827.76-6,455.51

Finding the Fourth Proportional to 8,579.63, 11,827.76 and 6,455.51

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Solution

The fourth proportional to 8,579.63, 11,827.76 and 6,455.51 is: 8,899.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.63 : 11,827.76 = 6,455.51 : x
  2. Step 2: Convert to fraction form
    8,579.63/11,827.76 = 6,455.51/x
  3. Step 3: Cross multiply
    8,579.63x = 11,827.76 × 6,455.51
  4. Step 4: Simplify right side
    8,579.63x = 76,354,175.90
  5. Step 5: Solve for x
    x = 76,354,175.90/8,579.63
  6. Step 6: Final answer
    x = 8,899.47

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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.