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Finding the Fourth Proportional to 8,703.40, 12,014.60 and 5,167.76

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Solution

The fourth proportional to 8,703.40, 12,014.60 and 5,167.76 is: 7,133.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,703.40 : 12,014.60 = 5,167.76 : x
  2. Step 2: Convert to fraction form
    8,703.40/12,014.60 = 5,167.76/x
  3. Step 3: Cross multiply
    8,703.40x = 12,014.60 × 5,167.76
  4. Step 4: Simplify right side
    8,703.40x = 62,088,569.30
  5. Step 5: Solve for x
    x = 62,088,569.30/8,703.40
  6. Step 6: Final answer
    x = 7,133.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.