Home / 5,313.84-7,970.14-1,418.55

Finding the Fourth Proportional to 5,313.84, 7,970.14 and 1,418.55

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Solution

The fourth proportional to 5,313.84, 7,970.14 and 1,418.55 is: 2,127.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,313.84 : 7,970.14 = 1,418.55 : x
  2. Step 2: Convert to fraction form
    5,313.84/7,970.14 = 1,418.55/x
  3. Step 3: Cross multiply
    5,313.84x = 7,970.14 × 1,418.55
  4. Step 4: Simplify right side
    5,313.84x = 11,306,042.10
  5. Step 5: Solve for x
    x = 11,306,042.10/5,313.84
  6. Step 6: Final answer
    x = 2,127.66

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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.