Home / 1,539.15-2,308.74-717.18

Finding the Fourth Proportional to 1,539.15, 2,308.74 and 717.18

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Solution

The fourth proportional to 1,539.15, 2,308.74 and 717.18 is: 1,075.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.15 : 2,308.74 = 717.18 : x
  2. Step 2: Convert to fraction form
    1,539.15/2,308.74 = 717.18/x
  3. Step 3: Cross multiply
    1,539.15x = 2,308.74 × 717.18
  4. Step 4: Simplify right side
    1,539.15x = 1,655,782.15
  5. Step 5: Solve for x
    x = 1,655,782.15/1,539.15
  6. Step 6: Final answer
    x = 1,075.78

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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.