Home / 1,948.01-2,921.90-561.29

Finding the Fourth Proportional to 1,948.01, 2,921.90 and 561.29

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Solution

The fourth proportional to 1,948.01, 2,921.90 and 561.29 is: 841.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.01 : 2,921.90 = 561.29 : x
  2. Step 2: Convert to fraction form
    1,948.01/2,921.90 = 561.29/x
  3. Step 3: Cross multiply
    1,948.01x = 2,921.90 × 561.29
  4. Step 4: Simplify right side
    1,948.01x = 1,640,015.84
  5. Step 5: Solve for x
    x = 1,640,015.84/1,948.01
  6. Step 6: Final answer
    x = 841.90

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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.