Home / 5,218.80-7,828.20-1,323.52

Finding the Fourth Proportional to 5,218.80, 7,828.20 and 1,323.52

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Solution

The fourth proportional to 5,218.80, 7,828.20 and 1,323.52 is: 1,985.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.80 : 7,828.20 = 1,323.52 : x
  2. Step 2: Convert to fraction form
    5,218.80/7,828.20 = 1,323.52/x
  3. Step 3: Cross multiply
    5,218.80x = 7,828.20 × 1,323.52
  4. Step 4: Simplify right side
    5,218.80x = 10,360,779.26
  5. Step 5: Solve for x
    x = 10,360,779.26/5,218.80
  6. Step 6: Final answer
    x = 1,985.28

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Similar ratio
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1.5x scale

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.