Home / 5,220.26-7,828.56-1,521.50

Finding the Fourth Proportional to 5,220.26, 7,828.56 and 1,521.50

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Solution

The fourth proportional to 5,220.26, 7,828.56 and 1,521.50 is: 2,281.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.26 : 7,828.56 = 1,521.50 : x
  2. Step 2: Convert to fraction form
    5,220.26/7,828.56 = 1,521.50/x
  3. Step 3: Cross multiply
    5,220.26x = 7,828.56 × 1,521.50
  4. Step 4: Simplify right side
    5,220.26x = 11,911,154.04
  5. Step 5: Solve for x
    x = 11,911,154.04/5,220.26
  6. Step 6: Final answer
    x = 2,281.72

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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.