Home / 2,021.90-3,032.84-561.05

Finding the Fourth Proportional to 2,021.90, 3,032.84 and 561.05

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Solution

The fourth proportional to 2,021.90, 3,032.84 and 561.05 is: 841.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.90 : 3,032.84 = 561.05 : x
  2. Step 2: Convert to fraction form
    2,021.90/3,032.84 = 561.05/x
  3. Step 3: Cross multiply
    2,021.90x = 3,032.84 × 561.05
  4. Step 4: Simplify right side
    2,021.90x = 1,701,583.87
  5. Step 5: Solve for x
    x = 1,701,583.87/2,021.90
  6. Step 6: Final answer
    x = 841.58

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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.