Home / 2,021.15-3,031.12-560.42

Finding the Fourth Proportional to 2,021.15, 3,031.12 and 560.42

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Solution

The fourth proportional to 2,021.15, 3,031.12 and 560.42 is: 840.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.15 : 3,031.12 = 560.42 : x
  2. Step 2: Convert to fraction form
    2,021.15/3,031.12 = 560.42/x
  3. Step 3: Cross multiply
    2,021.15x = 3,031.12 × 560.42
  4. Step 4: Simplify right side
    2,021.15x = 1,698,697.18
  5. Step 5: Solve for x
    x = 1,698,697.18/2,021.15
  6. Step 6: Final answer
    x = 840.46

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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.