Home / 2,390.87-3,585.40-929.84

Finding the Fourth Proportional to 2,390.87, 3,585.40 and 929.84

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Solution

The fourth proportional to 2,390.87, 3,585.40 and 929.84 is: 1,394.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.87 : 3,585.40 = 929.84 : x
  2. Step 2: Convert to fraction form
    2,390.87/3,585.40 = 929.84/x
  3. Step 3: Cross multiply
    2,390.87x = 3,585.40 × 929.84
  4. Step 4: Simplify right side
    2,390.87x = 3,333,828.08
  5. Step 5: Solve for x
    x = 3,333,828.08/2,390.87
  6. Step 6: Final answer
    x = 1,394.40

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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.