Home / 1,357.12-2,035.45-383.05

Finding the Fourth Proportional to 1,357.12, 2,035.45 and 383.05

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Solution

The fourth proportional to 1,357.12, 2,035.45 and 383.05 is: 574.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,357.12 : 2,035.45 = 383.05 : x
  2. Step 2: Convert to fraction form
    1,357.12/2,035.45 = 383.05/x
  3. Step 3: Cross multiply
    1,357.12x = 2,035.45 × 383.05
  4. Step 4: Simplify right side
    1,357.12x = 779,679.12
  5. Step 5: Solve for x
    x = 779,679.12/1,357.12
  6. Step 6: Final answer
    x = 574.51

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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.