Home / 1,267.24-1,749.78-972.04

Finding the Fourth Proportional to 1,267.24, 1,749.78 and 972.04

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Solution

The fourth proportional to 1,267.24, 1,749.78 and 972.04 is: 1,342.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267.24 : 1,749.78 = 972.04 : x
  2. Step 2: Convert to fraction form
    1,267.24/1,749.78 = 972.04/x
  3. Step 3: Cross multiply
    1,267.24x = 1,749.78 × 972.04
  4. Step 4: Simplify right side
    1,267.24x = 1,700,856.15
  5. Step 5: Solve for x
    x = 1,700,856.15/1,267.24
  6. Step 6: Final answer
    x = 1,342.17

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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.