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Finding the Fourth Proportional to 2,528, 3,488.36 and 1,408.68

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Solution

The fourth proportional to 2,528, 3,488.36 and 1,408.68 is: 1,943.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,528 : 3,488.36 = 1,408.68 : x
  2. Step 2: Convert to fraction form
    2,528/3,488.36 = 1,408.68/x
  3. Step 3: Cross multiply
    2,528x = 3,488.36 × 1,408.68
  4. Step 4: Simplify right side
    2,528x = 4,913,982.96
  5. Step 5: Solve for x
    x = 4,913,982.96/2,528
  6. Step 6: Final answer
    x = 1,943.82

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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.