Home / 1,512.24-2,267.68-690.32

Finding the Fourth Proportional to 1,512.24, 2,267.68 and 690.32

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Solution

The fourth proportional to 1,512.24, 2,267.68 and 690.32 is: 1,035.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.24 : 2,267.68 = 690.32 : x
  2. Step 2: Convert to fraction form
    1,512.24/2,267.68 = 690.32/x
  3. Step 3: Cross multiply
    1,512.24x = 2,267.68 × 690.32
  4. Step 4: Simplify right side
    1,512.24x = 1,565,424.86
  5. Step 5: Solve for x
    x = 1,565,424.86/1,512.24
  6. Step 6: Final answer
    x = 1,035.17

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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.