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Finding the Fourth Proportional to 8,625.77, 12,935.47 and 3,077.63

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Solution

The fourth proportional to 8,625.77, 12,935.47 and 3,077.63 is: 4,615.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.77 : 12,935.47 = 3,077.63 : x
  2. Step 2: Convert to fraction form
    8,625.77/12,935.47 = 3,077.63/x
  3. Step 3: Cross multiply
    8,625.77x = 12,935.47 × 3,077.63
  4. Step 4: Simplify right side
    8,625.77x = 39,810,518.16
  5. Step 5: Solve for x
    x = 39,810,518.16/8,625.77
  6. Step 6: Final answer
    x = 4,615.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.