Home / 1,820.64-2,731.08-522.12

Finding the Fourth Proportional to 1,820.64, 2,731.08 and 522.12

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Solution

The fourth proportional to 1,820.64, 2,731.08 and 522.12 is: 783.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.64 : 2,731.08 = 522.12 : x
  2. Step 2: Convert to fraction form
    1,820.64/2,731.08 = 522.12/x
  3. Step 3: Cross multiply
    1,820.64x = 2,731.08 × 522.12
  4. Step 4: Simplify right side
    1,820.64x = 1,425,951.49
  5. Step 5: Solve for x
    x = 1,425,951.49/1,820.64
  6. Step 6: Final answer
    x = 783.21

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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.