Home / 1,418.61-2,127.18-637.94

Finding the Fourth Proportional to 1,418.61, 2,127.18 and 637.94

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Solution

The fourth proportional to 1,418.61, 2,127.18 and 637.94 is: 956.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.61 : 2,127.18 = 637.94 : x
  2. Step 2: Convert to fraction form
    1,418.61/2,127.18 = 637.94/x
  3. Step 3: Cross multiply
    1,418.61x = 2,127.18 × 637.94
  4. Step 4: Simplify right side
    1,418.61x = 1,357,018.53
  5. Step 5: Solve for x
    x = 1,357,018.53/1,418.61
  6. Step 6: Final answer
    x = 956.58

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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.