Home / 3,148.35-4,731.05-1,688.55

Finding the Fourth Proportional to 3,148.35, 4,731.05 and 1,688.55

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Solution

The fourth proportional to 3,148.35, 4,731.05 and 1,688.55 is: 2,537.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,148.35 : 4,731.05 = 1,688.55 : x
  2. Step 2: Convert to fraction form
    3,148.35/4,731.05 = 1,688.55/x
  3. Step 3: Cross multiply
    3,148.35x = 4,731.05 × 1,688.55
  4. Step 4: Simplify right side
    3,148.35x = 7,988,614.48
  5. Step 5: Solve for x
    x = 7,988,614.48/3,148.35
  6. Step 6: Final answer
    x = 2,537.40

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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.