Home / 1,525.12-2,287.14-745.12

Finding the Fourth Proportional to 1,525.12, 2,287.14 and 745.12

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Solution

The fourth proportional to 1,525.12, 2,287.14 and 745.12 is: 1,117.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,525.12 : 2,287.14 = 745.12 : x
  2. Step 2: Convert to fraction form
    1,525.12/2,287.14 = 745.12/x
  3. Step 3: Cross multiply
    1,525.12x = 2,287.14 × 745.12
  4. Step 4: Simplify right side
    1,525.12x = 1,704,193.76
  5. Step 5: Solve for x
    x = 1,704,193.76/1,525.12
  6. Step 6: Final answer
    x = 1,117.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.