Home / 2,390.12-3,586.13-929.69

Finding the Fourth Proportional to 2,390.12, 3,586.13 and 929.69

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Solution

The fourth proportional to 2,390.12, 3,586.13 and 929.69 is: 1,394.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.12 : 3,586.13 = 929.69 : x
  2. Step 2: Convert to fraction form
    2,390.12/3,586.13 = 929.69/x
  3. Step 3: Cross multiply
    2,390.12x = 3,586.13 × 929.69
  4. Step 4: Simplify right side
    2,390.12x = 3,333,966.62
  5. Step 5: Solve for x
    x = 3,333,966.62/2,390.12
  6. Step 6: Final answer
    x = 1,394.90

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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.