Home / 1,418.02-2,123.79-1,275.46

Finding the Fourth Proportional to 1,418.02, 2,123.79 and 1,275.46

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Solution

The fourth proportional to 1,418.02, 2,123.79 and 1,275.46 is: 1,910.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.02 : 2,123.79 = 1,275.46 : x
  2. Step 2: Convert to fraction form
    1,418.02/2,123.79 = 1,275.46/x
  3. Step 3: Cross multiply
    1,418.02x = 2,123.79 × 1,275.46
  4. Step 4: Simplify right side
    1,418.02x = 2,708,809.19
  5. Step 5: Solve for x
    x = 2,708,809.19/1,418.02
  6. Step 6: Final answer
    x = 1,910.28

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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.