Home / 1,685.53-2,529.90-1,217.47

Finding the Fourth Proportional to 1,685.53, 2,529.90 and 1,217.47

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Solution

The fourth proportional to 1,685.53, 2,529.90 and 1,217.47 is: 1,827.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.53 : 2,529.90 = 1,217.47 : x
  2. Step 2: Convert to fraction form
    1,685.53/2,529.90 = 1,217.47/x
  3. Step 3: Cross multiply
    1,685.53x = 2,529.90 × 1,217.47
  4. Step 4: Simplify right side
    1,685.53x = 3,080,077.35
  5. Step 5: Solve for x
    x = 3,080,077.35/1,685.53
  6. Step 6: Final answer
    x = 1,827.36

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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.