Home / 1,525.12-2,287.32-429.24

Finding the Fourth Proportional to 1,525.12, 2,287.32 and 429.24

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Solution

The fourth proportional to 1,525.12, 2,287.32 and 429.24 is: 643.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,525.12 : 2,287.32 = 429.24 : x
  2. Step 2: Convert to fraction form
    1,525.12/2,287.32 = 429.24/x
  3. Step 3: Cross multiply
    1,525.12x = 2,287.32 × 429.24
  4. Step 4: Simplify right side
    1,525.12x = 981,809.24
  5. Step 5: Solve for x
    x = 981,809.24/1,525.12
  6. Step 6: Final answer
    x = 643.76

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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.