Home / 1,539.66-2,124.69-1,415.82

Finding the Fourth Proportional to 1,539.66, 2,124.69 and 1,415.82

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Solution

The fourth proportional to 1,539.66, 2,124.69 and 1,415.82 is: 1,953.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.66 : 2,124.69 = 1,415.82 : x
  2. Step 2: Convert to fraction form
    1,539.66/2,124.69 = 1,415.82/x
  3. Step 3: Cross multiply
    1,539.66x = 2,124.69 × 1,415.82
  4. Step 4: Simplify right side
    1,539.66x = 3,008,178.60
  5. Step 5: Solve for x
    x = 3,008,178.60/1,539.66
  6. Step 6: Final answer
    x = 1,953.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.