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Finding the Fourth Proportional to 8,605.45, 12,908.45 and 3,058.71

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Solution

The fourth proportional to 8,605.45, 12,908.45 and 3,058.71 is: 4,588.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.45 : 12,908.45 = 3,058.71 : x
  2. Step 2: Convert to fraction form
    8,605.45/12,908.45 = 3,058.71/x
  3. Step 3: Cross multiply
    8,605.45x = 12,908.45 × 3,058.71
  4. Step 4: Simplify right side
    8,605.45x = 39,483,205.10
  5. Step 5: Solve for x
    x = 39,483,205.10/8,605.45
  6. Step 6: Final answer
    x = 4,588.16

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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.