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Finding the Fourth Proportional to 8,625.64, 12,935.28 and 3,077.50

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Solution

The fourth proportional to 8,625.64, 12,935.28 and 3,077.50 is: 4,615.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.64 : 12,935.28 = 3,077.50 : x
  2. Step 2: Convert to fraction form
    8,625.64/12,935.28 = 3,077.50/x
  3. Step 3: Cross multiply
    8,625.64x = 12,935.28 × 3,077.50
  4. Step 4: Simplify right side
    8,625.64x = 39,808,324.20
  5. Step 5: Solve for x
    x = 39,808,324.20/8,625.64
  6. Step 6: Final answer
    x = 4,615.12

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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.