Home / 1,288.67-1,931.38-924.17

Finding the Fourth Proportional to 1,288.67, 1,931.38 and 924.17

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Solution

The fourth proportional to 1,288.67, 1,931.38 and 924.17 is: 1,385.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288.67 : 1,931.38 = 924.17 : x
  2. Step 2: Convert to fraction form
    1,288.67/1,931.38 = 924.17/x
  3. Step 3: Cross multiply
    1,288.67x = 1,931.38 × 924.17
  4. Step 4: Simplify right side
    1,288.67x = 1,784,911.49
  5. Step 5: Solve for x
    x = 1,784,911.49/1,288.67
  6. Step 6: Final answer
    x = 1,385.09

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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.