Home / 1,808.13-2,711.55-929.67

Finding the Fourth Proportional to 1,808.13, 2,711.55 and 929.67

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Solution

The fourth proportional to 1,808.13, 2,711.55 and 929.67 is: 1,394.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,808.13 : 2,711.55 = 929.67 : x
  2. Step 2: Convert to fraction form
    1,808.13/2,711.55 = 929.67/x
  3. Step 3: Cross multiply
    1,808.13x = 2,711.55 × 929.67
  4. Step 4: Simplify right side
    1,808.13x = 2,520,846.69
  5. Step 5: Solve for x
    x = 2,520,846.69/1,808.13
  6. Step 6: Final answer
    x = 1,394.17

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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.