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Finding the Fourth Proportional to 8,325.16, 12,488.14 and 3,130.63

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Solution

The fourth proportional to 8,325.16, 12,488.14 and 3,130.63 is: 4,696.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,325.16 : 12,488.14 = 3,130.63 : x
  2. Step 2: Convert to fraction form
    8,325.16/12,488.14 = 3,130.63/x
  3. Step 3: Cross multiply
    8,325.16x = 12,488.14 × 3,130.63
  4. Step 4: Simplify right side
    8,325.16x = 39,095,745.73
  5. Step 5: Solve for x
    x = 39,095,745.73/8,325.16
  6. Step 6: Final answer
    x = 4,696.10

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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.