Home / 1,539.57-2,317.68-1,405.65

Finding the Fourth Proportional to 1,539.57, 2,317.68 and 1,405.65

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Solution

The fourth proportional to 1,539.57, 2,317.68 and 1,405.65 is: 2,116.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.57 : 2,317.68 = 1,405.65 : x
  2. Step 2: Convert to fraction form
    1,539.57/2,317.68 = 1,405.65/x
  3. Step 3: Cross multiply
    1,539.57x = 2,317.68 × 1,405.65
  4. Step 4: Simplify right side
    1,539.57x = 3,257,846.89
  5. Step 5: Solve for x
    x = 3,257,846.89/1,539.57
  6. Step 6: Final answer
    x = 2,116.08

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.