Home / 8,688.12-13,029-3,140.13

Finding the Fourth Proportional to 8,688.12, 13,029 and 3,140.13

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Solution

The fourth proportional to 8,688.12, 13,029 and 3,140.13 is: 4,709.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.12 : 13,029 = 3,140.13 : x
  2. Step 2: Convert to fraction form
    8,688.12/13,029 = 3,140.13/x
  3. Step 3: Cross multiply
    8,688.12x = 13,029 × 3,140.13
  4. Step 4: Simplify right side
    8,688.12x = 40,912,753.77
  5. Step 5: Solve for x
    x = 40,912,753.77/8,688.12
  6. Step 6: Final answer
    x = 4,709.05

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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.