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Finding the Fourth Proportional to 8,753.64, 13,130.70 and 2,830.78

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Solution

The fourth proportional to 8,753.64, 13,130.70 and 2,830.78 is: 4,246.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,753.64 : 13,130.70 = 2,830.78 : x
  2. Step 2: Convert to fraction form
    8,753.64/13,130.70 = 2,830.78/x
  3. Step 3: Cross multiply
    8,753.64x = 13,130.70 × 2,830.78
  4. Step 4: Simplify right side
    8,753.64x = 37,170,122.95
  5. Step 5: Solve for x
    x = 37,170,122.95/8,753.64
  6. Step 6: Final answer
    x = 4,246.25

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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.