Home / 1,755.24-2,422.40-1,312.36

Finding the Fourth Proportional to 1,755.24, 2,422.40 and 1,312.36

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Solution

The fourth proportional to 1,755.24, 2,422.40 and 1,312.36 is: 1,811.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,755.24 : 2,422.40 = 1,312.36 : x
  2. Step 2: Convert to fraction form
    1,755.24/2,422.40 = 1,312.36/x
  3. Step 3: Cross multiply
    1,755.24x = 2,422.40 × 1,312.36
  4. Step 4: Simplify right side
    1,755.24x = 3,179,060.86
  5. Step 5: Solve for x
    x = 3,179,060.86/1,755.24
  6. Step 6: Final answer
    x = 1,811.18

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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.