Home / 1,276.02-1,760.91-745.27

Finding the Fourth Proportional to 1,276.02, 1,760.91 and 745.27

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Solution

The fourth proportional to 1,276.02, 1,760.91 and 745.27 is: 1,028.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.02 : 1,760.91 = 745.27 : x
  2. Step 2: Convert to fraction form
    1,276.02/1,760.91 = 745.27/x
  3. Step 3: Cross multiply
    1,276.02x = 1,760.91 × 745.27
  4. Step 4: Simplify right side
    1,276.02x = 1,312,346.20
  5. Step 5: Solve for x
    x = 1,312,346.20/1,276.02
  6. Step 6: Final answer
    x = 1,028.47

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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.