Home / 1,354.17-2,031.39-380.27

Finding the Fourth Proportional to 1,354.17, 2,031.39 and 380.27

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Solution

The fourth proportional to 1,354.17, 2,031.39 and 380.27 is: 570.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354.17 : 2,031.39 = 380.27 : x
  2. Step 2: Convert to fraction form
    1,354.17/2,031.39 = 380.27/x
  3. Step 3: Cross multiply
    1,354.17x = 2,031.39 × 380.27
  4. Step 4: Simplify right side
    1,354.17x = 772,481.75
  5. Step 5: Solve for x
    x = 772,481.75/1,354.17
  6. Step 6: Final answer
    x = 570.45

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1.5x scale

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.