Home / 1,947.02-2,686.08-1,200.20

Finding the Fourth Proportional to 1,947.02, 2,686.08 and 1,200.20

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Solution

The fourth proportional to 1,947.02, 2,686.08 and 1,200.20 is: 1,655.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.02 : 2,686.08 = 1,200.20 : x
  2. Step 2: Convert to fraction form
    1,947.02/2,686.08 = 1,200.20/x
  3. Step 3: Cross multiply
    1,947.02x = 2,686.08 × 1,200.20
  4. Step 4: Simplify right side
    1,947.02x = 3,223,833.22
  5. Step 5: Solve for x
    x = 3,223,833.22/1,947.02
  6. Step 6: Final answer
    x = 1,655.78

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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.