Home / 1,439.66-2,161.65-824.06

Finding the Fourth Proportional to 1,439.66, 2,161.65 and 824.06

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Solution

The fourth proportional to 1,439.66, 2,161.65 and 824.06 is: 1,237.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.66 : 2,161.65 = 824.06 : x
  2. Step 2: Convert to fraction form
    1,439.66/2,161.65 = 824.06/x
  3. Step 3: Cross multiply
    1,439.66x = 2,161.65 × 824.06
  4. Step 4: Simplify right side
    1,439.66x = 1,781,329.30
  5. Step 5: Solve for x
    x = 1,781,329.30/1,439.66
  6. Step 6: Final answer
    x = 1,237.33

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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.