Home / 1,260.18-1,739.66-756.20

Finding the Fourth Proportional to 1,260.18, 1,739.66 and 756.20

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Solution

The fourth proportional to 1,260.18, 1,739.66 and 756.20 is: 1,043.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.18 : 1,739.66 = 756.20 : x
  2. Step 2: Convert to fraction form
    1,260.18/1,739.66 = 756.20/x
  3. Step 3: Cross multiply
    1,260.18x = 1,739.66 × 756.20
  4. Step 4: Simplify right side
    1,260.18x = 1,315,531.46
  5. Step 5: Solve for x
    x = 1,315,531.46/1,260.18
  6. Step 6: Final answer
    x = 1,043.92

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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.