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Finding the Fourth Proportional to 8,743.40, 13,115.10 and 2,898.63

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Solution

The fourth proportional to 8,743.40, 13,115.10 and 2,898.63 is: 4,347.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,743.40 : 13,115.10 = 2,898.63 : x
  2. Step 2: Convert to fraction form
    8,743.40/13,115.10 = 2,898.63/x
  3. Step 3: Cross multiply
    8,743.40x = 13,115.10 × 2,898.63
  4. Step 4: Simplify right side
    8,743.40x = 38,015,822.31
  5. Step 5: Solve for x
    x = 38,015,822.31/8,743.40
  6. Step 6: Final answer
    x = 4,347.95

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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.