Home / 2,488.79-3,433.70-1,440.11

Finding the Fourth Proportional to 2,488.79, 3,433.70 and 1,440.11

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Solution

The fourth proportional to 2,488.79, 3,433.70 and 1,440.11 is: 1,986.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,488.79 : 3,433.70 = 1,440.11 : x
  2. Step 2: Convert to fraction form
    2,488.79/3,433.70 = 1,440.11/x
  3. Step 3: Cross multiply
    2,488.79x = 3,433.70 × 1,440.11
  4. Step 4: Simplify right side
    2,488.79x = 4,944,881.34
  5. Step 5: Solve for x
    x = 4,944,881.34/2,488.79
  6. Step 6: Final answer
    x = 1,986.87

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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.