Home / 1,688.48-2,521.78-1,677.44

Finding the Fourth Proportional to 1,688.48, 2,521.78 and 1,677.44

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Solution

The fourth proportional to 1,688.48, 2,521.78 and 1,677.44 is: 2,505.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.48 : 2,521.78 = 1,677.44 : x
  2. Step 2: Convert to fraction form
    1,688.48/2,521.78 = 1,677.44/x
  3. Step 3: Cross multiply
    1,688.48x = 2,521.78 × 1,677.44
  4. Step 4: Simplify right side
    1,688.48x = 4,230,134.64
  5. Step 5: Solve for x
    x = 4,230,134.64/1,688.48
  6. Step 6: Final answer
    x = 2,505.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.