Home / 1,555.97-2,146.95-1,260.72

Finding the Fourth Proportional to 1,555.97, 2,146.95 and 1,260.72

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Solution

The fourth proportional to 1,555.97, 2,146.95 and 1,260.72 is: 1,739.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.97 : 2,146.95 = 1,260.72 : x
  2. Step 2: Convert to fraction form
    1,555.97/2,146.95 = 1,260.72/x
  3. Step 3: Cross multiply
    1,555.97x = 2,146.95 × 1,260.72
  4. Step 4: Simplify right side
    1,555.97x = 2,706,702.80
  5. Step 5: Solve for x
    x = 2,706,702.80/1,555.97
  6. Step 6: Final answer
    x = 1,739.57

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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.