Home / 1,419.12-2,123.64-1,053

Finding the Fourth Proportional to 1,419.12, 2,123.64 and 1,053

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Solution

The fourth proportional to 1,419.12, 2,123.64 and 1,053 is: 1,575.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419.12 : 2,123.64 = 1,053 : x
  2. Step 2: Convert to fraction form
    1,419.12/2,123.64 = 1,053/x
  3. Step 3: Cross multiply
    1,419.12x = 2,123.64 × 1,053
  4. Step 4: Simplify right side
    1,419.12x = 2,236,192.92
  5. Step 5: Solve for x
    x = 2,236,192.92/1,419.12
  6. Step 6: Final answer
    x = 1,575.76

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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.