Home / 1,342.12-2,012.45-903.35

Finding the Fourth Proportional to 1,342.12, 2,012.45 and 903.35

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Solution

The fourth proportional to 1,342.12, 2,012.45 and 903.35 is: 1,354.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.12 : 2,012.45 = 903.35 : x
  2. Step 2: Convert to fraction form
    1,342.12/2,012.45 = 903.35/x
  3. Step 3: Cross multiply
    1,342.12x = 2,012.45 × 903.35
  4. Step 4: Simplify right side
    1,342.12x = 1,817,947.22
  5. Step 5: Solve for x
    x = 1,817,947.22/1,342.12
  6. Step 6: Final answer
    x = 1,354.53

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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.