Home / 4,392.57-6,589.82-1,390.45

Finding the Fourth Proportional to 4,392.57, 6,589.82 and 1,390.45

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Solution

The fourth proportional to 4,392.57, 6,589.82 and 1,390.45 is: 2,085.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,392.57 : 6,589.82 = 1,390.45 : x
  2. Step 2: Convert to fraction form
    4,392.57/6,589.82 = 1,390.45/x
  3. Step 3: Cross multiply
    4,392.57x = 6,589.82 × 1,390.45
  4. Step 4: Simplify right side
    4,392.57x = 9,162,836.51
  5. Step 5: Solve for x
    x = 9,162,836.51/4,392.57
  6. Step 6: Final answer
    x = 2,085.99

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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.