Home / 2,688.79-4,034.31-1,648.81

Finding the Fourth Proportional to 2,688.79, 4,034.31 and 1,648.81

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Solution

The fourth proportional to 2,688.79, 4,034.31 and 1,648.81 is: 2,473.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.79 : 4,034.31 = 1,648.81 : x
  2. Step 2: Convert to fraction form
    2,688.79/4,034.31 = 1,648.81/x
  3. Step 3: Cross multiply
    2,688.79x = 4,034.31 × 1,648.81
  4. Step 4: Simplify right side
    2,688.79x = 6,651,810.67
  5. Step 5: Solve for x
    x = 6,651,810.67/2,688.79
  6. Step 6: Final answer
    x = 2,473.90

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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.