Home / 1,248.05-1,722.19-1,206.13

Finding the Fourth Proportional to 1,248.05, 1,722.19 and 1,206.13

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Solution

The fourth proportional to 1,248.05, 1,722.19 and 1,206.13 is: 1,664.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248.05 : 1,722.19 = 1,206.13 : x
  2. Step 2: Convert to fraction form
    1,248.05/1,722.19 = 1,206.13/x
  3. Step 3: Cross multiply
    1,248.05x = 1,722.19 × 1,206.13
  4. Step 4: Simplify right side
    1,248.05x = 2,077,185.02
  5. Step 5: Solve for x
    x = 2,077,185.02/1,248.05
  6. Step 6: Final answer
    x = 1,664.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.