Home / 1,246.49-1,869.50-424.65

Finding the Fourth Proportional to 1,246.49, 1,869.50 and 424.65

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Solution

The fourth proportional to 1,246.49, 1,869.50 and 424.65 is: 636.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.49 : 1,869.50 = 424.65 : x
  2. Step 2: Convert to fraction form
    1,246.49/1,869.50 = 424.65/x
  3. Step 3: Cross multiply
    1,246.49x = 1,869.50 × 424.65
  4. Step 4: Simplify right side
    1,246.49x = 793,881.05
  5. Step 5: Solve for x
    x = 793,881.05/1,246.49
  6. Step 6: Final answer
    x = 636.89

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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.