Home / 1,215.65-1,823.35-522.19

Finding the Fourth Proportional to 1,215.65, 1,823.35 and 522.19

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Solution

The fourth proportional to 1,215.65, 1,823.35 and 522.19 is: 783.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.65 : 1,823.35 = 522.19 : x
  2. Step 2: Convert to fraction form
    1,215.65/1,823.35 = 522.19/x
  3. Step 3: Cross multiply
    1,215.65x = 1,823.35 × 522.19
  4. Step 4: Simplify right side
    1,215.65x = 952,126.02
  5. Step 5: Solve for x
    x = 952,126.02/1,215.65
  6. Step 6: Final answer
    x = 783.23

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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.