Home / 1,113.80-1,669.86-528.44

Finding the Fourth Proportional to 1,113.80, 1,669.86 and 528.44

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Solution

The fourth proportional to 1,113.80, 1,669.86 and 528.44 is: 792.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113.80 : 1,669.86 = 528.44 : x
  2. Step 2: Convert to fraction form
    1,113.80/1,669.86 = 528.44/x
  3. Step 3: Cross multiply
    1,113.80x = 1,669.86 × 528.44
  4. Step 4: Simplify right side
    1,113.80x = 882,412.47
  5. Step 5: Solve for x
    x = 882,412.47/1,113.80
  6. Step 6: Final answer
    x = 792.26

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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.